CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>The Astrophysical Journal - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"cced2d8d-39d8-476d-9631-1183ca327627","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"The_Astrophysical_Journal","wgTitle":"The Astrophysical Journal","wgCurRevisionId":1257978800,"wgRevisionId":1257978800,"wgArticleId":209297,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","Triannual journals (infobox)","Open access journals (infobox)","Astronomy journals","Astrophysics journals","IOP Publishing academic journals","University of Chicago Press academic journals","Academic journals established in 1895","English-language journals","American Astronomical Society academic journals","Online-only journals"],"wgPageViewLanguage":"en","wgPageContentLanguage": "en","wgPageContentModel":"wikitext","wgRelevantPageName":"The_Astrophysical_Journal","wgRelevantArticleId":209297,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgRedirectedFrom":"Astrophysical_Journal","wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":9000,"wgInternalRedirectTargetUrl":"/wiki/The_Astrophysical_Journal","wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader" :true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q598789","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["mediawiki.action.view.redirect","ext.cite.ux-enhancements","site","mediawiki.page.ready","mediawiki.toc", "skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="The Astrophysical Journal - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/The_Astrophysical_Journal"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=The_Astrophysical_Journal&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/The_Astrophysical_Journal"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-The_Astrophysical_Journal rootpage-The_Astrophysical_Journal skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=The+Astrophysical+Journal" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=The+Astrophysical+Journal" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=The+Astrophysical+Journal" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=The+Astrophysical+Journal" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Editors" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Editors"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Editors</span> </div> </a> <ul id="toc-Editors-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><i>The Astrophysical Journal</i></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 31 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-31" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">31 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D9%84%D9%85%D8%AC%D9%84%D8%A9_%D8%A7%D9%84%D9%81%D9%8A%D8%B2%D9%8A%D8%A7%D8%A6%D9%8A%D8%A9_%D8%A7%D9%84%D9%81%D9%84%D9%83%D9%8A%D8%A9" title="المجلة الفيزيائية الفلكية – Arabic" lang="ar" hreflang="ar" data-title="المجلة الفيزيائية الفلكية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Asturian" lang="ast" hreflang="ast" data-title="The Astrophysical Journal" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Belarusian" lang="be" hreflang="be" data-title="The Astrophysical Journal" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Catalan" lang="ca" hreflang="ca" data-title="Astrophysical Journal" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Danish" lang="da" hreflang="da" data-title="The Astrophysical Journal" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – German" lang="de" hreflang="de" data-title="The Astrophysical Journal" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Estonian" lang="et" hreflang="et" data-title="Astrophysical Journal" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Spanish" lang="es" hreflang="es" data-title="The Astrophysical Journal" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%98%D9%88%D8%B1%D9%86%D8%A7%D9%84_%D8%A7%D8%AE%D8%AA%D8%B1%D9%81%DB%8C%D8%B2%DB%8C%DA%A9%DB%8C" title="ژورنال اخترفیزیکی – Persian" lang="fa" hreflang="fa" data-title="ژورنال اخترفیزیکی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – French" lang="fr" hreflang="fr" data-title="The Astrophysical Journal" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%B2%9C%EC%B2%B4%EB%AC%BC%EB%A6%AC%ED%95%99_%EC%A0%80%EB%84%90" title="천체물리학 저널 – Korean" lang="ko" hreflang="ko" data-title="천체물리학 저널" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%A6_%E0%A4%8F%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%AB%E0%A4%BF%E0%A4%9C%E0%A4%BF%E0%A4%95%E0%A4%B2_%E0%A4%9C%E0%A4%B0%E0%A5%8D%E0%A4%A8%E0%A4%B2" title="द एस्ट्रोफिजिकल जर्नल – Hindi" lang="hi" hreflang="hi" data-title="द एस्ट्रोफिजिकल जर्नल" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Indonesian" lang="id" hreflang="id" data-title="The Astrophysical Journal" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Italian" lang="it" hreflang="it" data-title="The Astrophysical Journal" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Luxembourgish" lang="lb" hreflang="lb" data-title="Astrophysical Journal" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Lithuanian" lang="lt" hreflang="lt" data-title="The Astrophysical Journal" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Macedonian" lang="mk" hreflang="mk" data-title="Astrophysical Journal" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Dutch" lang="nl" hreflang="nl" data-title="Astrophysical Journal" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%A2%E3%82%B9%E3%83%88%E3%83%AD%E3%83%95%E3%82%A3%E3%82%B8%E3%82%AB%E3%83%AB%E3%82%B8%E3%83%A3%E3%83%BC%E3%83%8A%E3%83%AB" title="アストロフィジカルジャーナル – Japanese" lang="ja" hreflang="ja" data-title="アストロフィジカルジャーナル" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="The Astrophysical Journal" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Polish" lang="pl" hreflang="pl" data-title="The Astrophysical Journal" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Portuguese" lang="pt" hreflang="pt" data-title="Astrophysical Journal" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Romanian" lang="ro" hreflang="ro" data-title="Astrophysical Journal" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Russian" lang="ru" hreflang="ru" data-title="The Astrophysical Journal" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Simple English" lang="en-simple" hreflang="en-simple" data-title="The Astrophysical Journal" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Finnish" lang="fi" hreflang="fi" data-title="Astrophysical Journal" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Swedish" lang="sv" hreflang="sv" data-title="The Astrophysical Journal" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Turkish" lang="tr" hreflang="tr" data-title="The Astrophysical Journal" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Astrophysical_Journal" title="Astrophysical Journal – Ukrainian" lang="uk" hreflang="uk" data-title="Astrophysical Journal" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal – Vietnamese" lang="vi" hreflang="vi" data-title="The Astrophysical Journal" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A4%A9%E6%96%87%E7%89%A9%E7%90%86%E6%9C%9F%E5%88%8A" title="天文物理期刊 – Chinese" lang="zh" hreflang="zh" data-title="天文物理期刊" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q598789#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/The_Astrophysical_Journal" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:The_Astrophysical_Journal" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/The_Astrophysical_Journal"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/The_Astrophysical_Journal"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/The_Astrophysical_Journal" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/The_Astrophysical_Journal" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&oldid=1257978800" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=The_Astrophysical_Journal&id=1257978800&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FThe_Astrophysical_Journal"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FThe_Astrophysical_Journal"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=The_Astrophysical_Journal&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=The_Astrophysical_Journal&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-wikinews mw-list-item"><a href="https://en.wikinews.org/wiki/Category:The_Astrophysical_Journal" hreflang="en"><span>Wikinews</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q598789" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Astrophysical_Journal&redirect=no" class="mw-redirect" title="Astrophysical Journal">Astrophysical Journal</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Academic journal founded in 1895</div> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Academic journal</div><div class="infobox-journal-search" style="display:none;"></div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox hproduct"><caption class="infobox-title" style="font-size:125%;"><i><span class="fn">The Astrophysical Journal</span></i><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.jtitle=The+Astrophysical+Journal&rft.stitle=Astrophys.+J.&rft.issn=0004-637X&rft.eissn=1538-4357&rft_id=https%3A%2F%2Fiopscience.iop.org%2Fapj"></span></caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:The_Astrophysical_Journal_logo.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/c/c6/The_Astrophysical_Journal_logo.png/200px-The_Astrophysical_Journal_logo.png" decoding="async" width="200" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/c/c6/The_Astrophysical_Journal_logo.png/300px-The_Astrophysical_Journal_logo.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/c/c6/The_Astrophysical_Journal_logo.png/400px-The_Astrophysical_Journal_logo.png 2x" data-file-width="890" data-file-height="100" /></a></span></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Outline_of_academic_disciplines" title="Outline of academic disciplines">Discipline</a></th><td class="infobox-data category" style="text-align:left;"><a href="/wiki/Astronomy" title="Astronomy">Astronomy</a>, <a href="/wiki/Astrophysics" title="Astrophysics">Astrophysics</a></td></tr><tr><th scope="row" class="infobox-label">Language</th><td class="infobox-data" style="text-align:left;">English</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Editor-in-chief" title="Editor-in-chief">Edited</a> by</th><td class="infobox-data" style="text-align:left;"><a href="/wiki/Ethan_Vishniac" title="Ethan Vishniac">Ethan Vishniac</a></td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Publication details</th></tr><tr><th scope="row" class="infobox-label">History</th><td class="infobox-data" style="text-align:left;">1895–present</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Academic_publishing" title="Academic publishing">Publisher</a></th><td class="infobox-data" style="text-align:left;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/IOP_Publishing" title="IOP Publishing">IOP Publishing</a> for the <a href="/wiki/American_Astronomical_Society" title="American Astronomical Society">American Astronomical Society</a></div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Periodical_literature#Frequency" title="Periodical literature">Frequency</a></th><td class="infobox-data" style="text-align:left;">3/month</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><span class="nowrap"><a href="/wiki/Open_access" title="Open access">Open access</a></span></div></th><td class="infobox-data" style="text-align:left;"><a href="/wiki/Gold_open_access" class="mw-redirect" title="Gold open access">Gold open access</a></td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><span class="nowrap"><a href="/wiki/Impact_factor" title="Impact factor">Impact factor</a></span></div></th><td class="infobox-data" style="text-align:left;">4.8 (Journal) <br /> 8.8 (Letters) <br /> 8.6 (Supplement) (2023)</td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Standard abbreviations<br /><span class="infobox-journal-search plainlinks" style="display:none;"><a rel="nofollow" class="external text" href="https://marcinwrochna.github.io/abbrevIso/?search=The_Astrophysical_Journal">ISO 4</a> (<a rel="nofollow" class="external text" href="http://www.issn.org/services/online-services/access-to-the-ltwa/">alt</a>) <b>·</b> <a href="/wiki/Wikipedia:WikiProject_Academic_Journals/Bluebook_journals" title="Wikipedia:WikiProject Academic Journals/Bluebook journals">Bluebook</a> (<a rel="nofollow" class="external text" href="https://westerncriminology.org/publications/bluebook-abbreviations/">alt</a>)<br /><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=0004-637X%5BISSN%5D">NLM</a> (<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=The+Astrophysical+Journal%5BJournal%5D">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/msnhtml/serials.pdf">MathSciNet</a> (<a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet/search/journals.html?journalName=0004-637X&Submit=Search">alt</a> <span typeof="mw:File"><span title="Paid subscription required"><img alt="Paid subscription required" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png" decoding="async" width="9" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/14px-Lock-red-alt-2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/18px-Lock-red-alt-2.svg.png 2x" data-file-width="597" data-file-height="947" /></span></span>)</span></th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/ISO_4" title="ISO 4">ISO 4</a></th><td class="infobox-data identifier" style="text-align:left;"><i>Astrophys. J.</i></td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Indexing<br /><span class="infobox-journal-search plainlinks" style="display:none;"><a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=issns&c=WIy460-R_DY&searchFor=0004-637X">CODEN</a> (<a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=issns&c=WIy460-R_DY&searchFor=1538-4357">alt</a> <b>·</b> <a rel="nofollow" class="external text" href="https://cassi.cas.org/searching.jsp?searchIn=titles&c=WIy460-R_DY&searchFor=The+Astrophysical+Journal">alt2</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/journals/0004637X">JSTOR</a> (<a rel="nofollow" class="external text" href="https://www.jstor.org/action/showJournals?browseType=title">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://catalog.loc.gov/vwebv/search?searchArg1=0004-637X&argType1=all&searchCode1=KNUM&searchType=2">LCCN</a> (<a rel="nofollow" class="external text" href="https://catalog.loc.gov/vwebv/search?searchArg1=The+Astrophysical+Journal&argType1=all&searchCode1=KTIL&searchType=2">alt</a>)<br /><a rel="nofollow" class="external text" href="http://miar.ub.edu/issn/0004-637X">MIAR</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=0004-637X%5BISSN%5D">NLM</a> (<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/nlmcatalog?term=The+Astrophysical+Journal%5BJournal%5D">alt</a>) <b>·</b> <a rel="nofollow" class="external text" href="https://www.scopus.com/sources?sortField=citescore&sortDirection=desc&isHiddenField=false&field=issn&issn=0004-637X">Scopus</a></span></th></tr><tr><th scope="row" class="infobox-label"><span class="type"><a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a></span></th><td class="infobox-data" style="text-align:left;"><span class="value"><a rel="nofollow" class="external text" href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:0004-637X">0004-637X</a></span> (print)<br /><a rel="nofollow" class="external text" href="https://www.worldcat.org/search?fq=x0:jrnl&q=n2:1538-4357">1538-4357</a> (web)<br /></td></tr><tr><th colspan="2" class="infobox-header" style="background:#dfc;">Links</th></tr><tr><td colspan="2" class="infobox-full-data" style="text-align:left;"> <ul><li><a rel="nofollow" class="external text" href="https://iopscience.iop.org/apj">Journal homepage</a></li> <li><a rel="nofollow" class="external text" href="https://iopscience.iop.org/apjl">The Astrophysical Journal Letters</a></li> <li><a rel="nofollow" class="external text" href="https://iopscience.iop.org/apjs">The Astrophysical Journal Supplement Series</a></li></ul> </td></tr></tbody></table> <p><i><b>The Astrophysical Journal</b></i> (<i><b>ApJ</b></i><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>) is a <a href="/wiki/Peer_review" title="Peer review">peer-reviewed</a> <a href="/wiki/Scientific_journal" title="Scientific journal">scientific journal</a> of <a href="/wiki/Astrophysics" title="Astrophysics">astrophysics</a> and <a href="/wiki/Astronomy" title="Astronomy">astronomy</a>, established in 1895 by American astronomers <a href="/wiki/George_Ellery_Hale" title="George Ellery Hale">George Ellery Hale</a> and <a href="/wiki/James_Edward_Keeler" title="James Edward Keeler">James Edward Keeler</a>. The journal discontinued its print edition and became an electronic-only journal in 2015.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Since 1953, <i><b>The Astrophysical Journal Supplement Series</b></i> (<i><b>ApJS</b></i>) has been published in conjunction with <i>The Astrophysical Journal</i>, with generally longer articles to supplement the material in the journal. It publishes six volumes per year, with two 280-page issues per volume. </p><p><i><b>The Astrophysical Journal Letters</b></i> (<i><b>ApJL</b></i>), established in 1967 by <a href="/wiki/Subrahmanyan_Chandrasekhar" title="Subrahmanyan Chandrasekhar">Subrahmanyan Chandrasekhar</a> as Part 2 of <i>The Astrophysical Journal</i>, is now a separate journal focusing on the rapid publication of high-impact astronomical research. </p><p>The three journals were published by the <a href="/wiki/University_of_Chicago_Press" title="University of Chicago Press">University of Chicago Press</a> for the <a href="/wiki/American_Astronomical_Society" title="American Astronomical Society">American Astronomical Society</a> until, in January 2009, publication was transferred to <a href="/wiki/IOP_Publishing" title="IOP Publishing">IOP Publishing</a>,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> following the move of the society's <i><a href="/wiki/Astronomical_Journal" class="mw-redirect" title="Astronomical Journal">Astronomical Journal</a></i> in 2008. The reason for the changes were given by the society as the increasing financial demands of the University of Chicago Press.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Compared to journals in other scientific disciplines, <i>The Astrophysical Journal</i> has a larger (> 85%) acceptance rate, which, however, is similar to other journals covering astronomy and astrophysics.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>On January 1, 2022, the AAS Journals, including ApJ, changed to an open access model, with access restrictions and subscription charges removed from previously published papers.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Articles accepted after October 11, 2022, will be published under the <a href="/wiki/Creative_Commons_license" title="Creative Commons license">Creative Commons license</a> CC-BY-SA 4.0. Non-open access articles accepted before that date will be free to access but will still need permission to reuse.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The journal was founded in 1895 by <a href="/wiki/George_Ellery_Hale" title="George Ellery Hale">George Ellery Hale</a> and <a href="/wiki/James_E._Keeler" class="mw-redirect" title="James E. Keeler">James E. Keeler</a> as <i>The Astrophysical Journal: An International Review of Spectroscopy and Astronomical Physics</i>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> In addition to the two founding editors, there was an international board of associate editors: <a href="/wiki/Marie_Alfred_Cornu" title="Marie Alfred Cornu">M. A. Cornu</a>, Paris; <a href="/wiki/Nils_Christoffer_Dun%C3%A9r" title="Nils Christoffer Dunér">N. C. Dunér</a>, Upsala; <a href="/wiki/William_Huggins" title="William Huggins">William Huggins</a>, London; <a href="/wiki/Pietro_Tacchini" title="Pietro Tacchini">P. Tacchini</a>, Rome; <a href="/wiki/Hermann_Carl_Vogel" title="Hermann Carl Vogel">H. C. Vogel</a>, Potsdam, <a href="/wiki/Charles_S._Hastings" title="Charles S. Hastings">C. S. Hastings</a>, Yale; <a href="/wiki/A._A._Michelson" class="mw-redirect" title="A. A. Michelson">A. A. Michelson</a>, Chicago; <a href="/wiki/Edward_C._Pickering" class="mw-redirect" title="Edward C. Pickering">E. C. Pickering</a>, Harvard; <a href="/wiki/H._A._Rowland" class="mw-redirect" title="H. A. Rowland">H. A. Rowland</a>, Johns Hopkins; and <a href="/wiki/Charles_Augustus_Young" title="Charles Augustus Young">C. A. Young</a>, Princeton.<sup id="cite_ref-Hale1895_10-0" class="reference"><a href="#cite_note-Hale1895-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> It was intended that the journal would fill the gap between journals in astronomy and physics, providing a venue for publication of articles on astronomical applications of the <a href="/wiki/Spectroscope" class="mw-redirect" title="Spectroscope">spectroscope</a>; on laboratory research closely allied to astronomical physics, including <a href="/wiki/Wavelength" title="Wavelength">wavelength</a> determinations of metallic and gaseous <a href="/wiki/Spectrum#Electromagnetic_spectrum" title="Spectrum">spectra</a> and experiments on <a href="/wiki/Electromagnetic_radiation" title="Electromagnetic radiation">radiation</a> and <a href="/wiki/Absorption_(electromagnetic_radiation)" title="Absorption (electromagnetic radiation)">absorption</a>; on theories of the Sun, Moon, planets, comets, meteors, and nebulae; and on instrumentation for telescopes and laboratories.<sup id="cite_ref-Hale1895_10-1" class="reference"><a href="#cite_note-Hale1895-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> The further development of ApJ up to 1995 was outlined by <a href="/wiki/Helmut_Abt" title="Helmut Abt">Helmut Abt</a> in an article entitled "Some Statistical Highlights of the <i>Astrophysical Journal</i>" in 1995.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Editors">Editors</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit&section=2" title="Edit section: Editors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The following persons have been <a href="/wiki/Editors-in-chief" class="mw-redirect" title="Editors-in-chief">editors-in-chief</a> of the journal: </p> <ul><li><a href="/wiki/George_Hale" class="mw-redirect" title="George Hale">George Hale</a> (1895–1902)</li> <li><a href="/wiki/Edwin_Brant_Frost" title="Edwin Brant Frost">Edwin Brant Frost</a> (1902–1932)<sup id="cite_ref-:0_12-0" class="reference"><a href="#cite_note-:0-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Otto_Struve" title="Otto Struve">Otto Struve</a> (1932-1947)<sup id="cite_ref-:0_12-1" class="reference"><a href="#cite_note-:0-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/William_Wilson_Morgan" title="William Wilson Morgan">W.W. Morgan</a> (1947-1952)<sup id="cite_ref-:0_12-2" class="reference"><a href="#cite_note-:0-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Subrahmanyan_Chandrasekhar" title="Subrahmanyan Chandrasekhar">Subrahmanyan Chandrasekhar</a> (1952–1971)<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Helmut_Abt" title="Helmut Abt">Helmut A. Abt</a> (1971–1999)</li> <li><a href="/wiki/Robert_Kennicutt" title="Robert Kennicutt">Robert Kennicutt</a> (1999–2006)</li> <li><a href="/wiki/Ethan_Vishniac" title="Ethan Vishniac">Ethan Vishniac</a> (2006–present)</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i><a href="/wiki/The_Astronomical_Journal" title="The Astronomical Journal">The Astronomical Journal</a></i></li> <li><i><a href="/wiki/Astronomy_and_Astrophysics" class="mw-redirect" title="Astronomy and Astrophysics">Astronomy and Astrophysics</a></i></li> <li><i><a href="/wiki/Monthly_Notices_of_the_Royal_Astronomical_Society" title="Monthly Notices of the Royal Astronomical Society">Monthly Notices of the Royal Astronomical Society</a></i></li> <li><i><a href="/wiki/Publications_of_the_Astronomical_Society_of_the_Pacific" title="Publications of the Astronomical Society of the Pacific">Publications of the Astronomical Society of the Pacific</a></i></li> <li><i><a href="/wiki/Publications_of_the_Astronomical_Society_of_Australia" title="Publications of the Astronomical Society of Australia">Publications of the Astronomical Society of Australia</a></i></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 25em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Referred to as <i>ApJ</i> on its own website</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://ioppublishing.org/news/american-astronomical-society-journals-going-electronic-only">"American Astronomical Society Journals Going Electronic Only"</a>. <a href="/wiki/IOP_Publishing" title="IOP Publishing">IOP Publishing</a>. 2014-06-02<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-01-12</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=American+Astronomical+Society+Journals+Going+Electronic+Only&rft.pub=IOP+Publishing&rft.date=2014-06-02&rft_id=http%3A%2F%2Fioppublishing.org%2Fnews%2Famerican-astronomical-society-journals-going-electronic-only&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.prnewswire.co.uk/cgi/news/release?id=196128">"American Astronomical Society Selects Institute of Physics Publishing As New Publishing Partner"</a>. PR Newswire Europe Ltd. 2007-04-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2007-07-21</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=American+Astronomical+Society+Selects+Institute+of+Physics+Publishing+As+New+Publishing+Partner&rft.pub=PR+Newswire+Europe+Ltd.&rft.date=2007-04-25&rft_id=http%3A%2F%2Fwww.prnewswire.co.uk%2Fcgi%2Fnews%2Frelease%3Fid%3D196128&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHoward2007" class="citation web cs1">Howard, Jennifer (2007-05-18). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210426010419/https://www.chronicle.com/article/u-of-chicago-press-loses-3-journals-after-publishing-agreement-is-changed/">"U. of Chicago Press Loses 3 Journals After Publishing Agreement Is Changed"</a>. <a href="/wiki/Chronicle_of_Higher_Education" class="mw-redirect" title="Chronicle of Higher Education">Chronicle of Higher Education</a>. Archived from <a rel="nofollow" class="external text" href="https://www.chronicle.com/article/u-of-chicago-press-loses-3-journals-after-publishing-agreement-is-changed/">the original</a> on 2021-04-26<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-02-12</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=U.+of+Chicago+Press+Loses+3+Journals+After+Publishing+Agreement+Is+Changed&rft.pub=Chronicle+of+Higher+Education&rft.date=2007-05-18&rft.aulast=Howard&rft.aufirst=Jennifer&rft_id=https%3A%2F%2Fwww.chronicle.com%2Farticle%2Fu-of-chicago-press-loses-3-journals-after-publishing-agreement-is-changed%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAbt2009" class="citation journal cs1">Abt, Helmut (2009). <a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F648536">"Reviewing and Revision Times for The Astrophysical Journal"</a>. <i>Publications of the Astronomical Society of the Pacific</i>. <b>121</b> (885): 1291–1293. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2009PASP..121.1291A">2009PASP..121.1291A</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F648536">10.1086/648536</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-6280">0004-6280</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Publications+of+the+Astronomical+Society+of+the+Pacific&rft.atitle=Reviewing+and+Revision+Times+for+The+Astrophysical+Journal&rft.volume=121&rft.issue=885&rft.pages=1291-1293&rft.date=2009&rft.issn=0004-6280&rft_id=info%3Adoi%2F10.1086%2F648536&rft_id=info%3Abibcode%2F2009PASP..121.1291A&rft.aulast=Abt&rft.aufirst=Helmut&rft_id=https%3A%2F%2Fdoi.org%2F10.1086%252F648536&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPattaschPraderie1988" class="citation journal cs1">Pattasch, S. R.; Praderie, F. (1988). <a rel="nofollow" class="external text" href="https://www.eso.org/sci/publications/messenger/archive/no.53-sep88/messenger-no53-16-19.pdf">"Comparison of astronomical journals"</a> <span class="cs1-format">(PDF)</span>. <i>The ESO Messenger</i>. <b>53</b>: 16. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1988Msngr..53...16P">1988Msngr..53...16P</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0722-6691">0722-6691</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+ESO+Messenger&rft.atitle=Comparison+of+astronomical+journals&rft.volume=53&rft.pages=16&rft.date=1988&rft.issn=0722-6691&rft_id=info%3Abibcode%2F1988Msngr..53...16P&rft.aulast=Pattasch&rft.aufirst=S.+R.&rft.au=Praderie%2C+F.&rft_id=https%3A%2F%2Fwww.eso.org%2Fsci%2Fpublications%2Fmessenger%2Farchive%2Fno.53-sep88%2Fmessenger-no53-16-19.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation pressrelease cs1"><a rel="nofollow" class="external text" href="https://aas.org/press/aas-journals-open-access">"AAS Journals Will Switch to Open Access"</a>. <i>American Astronomical Society</i> (Press release). September 1, 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=AAS+Journals+Will+Switch+to+Open+Access&rft.date=2021-09-01&rft_id=https%3A%2F%2Faas.org%2Fpress%2Faas-journals-open-access&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://journals.aas.org/oa/">"AAS Journals Transition to Open Access"</a>. The American Astronomica Society<span class="reference-accessdate">. Retrieved <span class="nowrap">5 April</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=AAS+Journals+Transition+to+Open+Access&rft.pub=The+American+Astronomica+Society&rft_id=https%3A%2F%2Fjournals.aas.org%2Foa%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><i>The Astrophysical Journal</i>. <b>1</b> (1). </span> </li> <li id="cite_note-Hale1895-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-Hale1895_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Hale1895_10-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHale1895" class="citation journal cs1"><a href="/wiki/George_Ellery_Hale" title="George Ellery Hale">Hale, George Ellery</a> (1895). <a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F140011">"The Astrophysical Journal"</a>. <i>The Astrophysical Journal</i>. <b>1</b> (1): 80–84. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1895ApJ.....1...80H">1895ApJ.....1...80H</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F140011">10.1086/140011</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-637X">0004-637X</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=The+Astrophysical+Journal&rft.volume=1&rft.issue=1&rft.pages=80-84&rft.date=1895&rft.issn=0004-637X&rft_id=info%3Adoi%2F10.1086%2F140011&rft_id=info%3Abibcode%2F1895ApJ.....1...80H&rft.aulast=Hale&rft.aufirst=George+Ellery&rft_id=https%3A%2F%2Fdoi.org%2F10.1086%252F140011&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAbt1995" class="citation journal cs1">Abt, H A (1995). <a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F176587">"Some Statistical Highlights of the <i>Astrophysical Journal</i>"</a>. <i>The Astrophysical Journal</i>. <b>455</b>: 407. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1995ApJ...455..407A">1995ApJ...455..407A</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F176587">10.1086/176587</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-637X">0004-637X</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Some+Statistical+Highlights+of+the+Astrophysical+Journal&rft.volume=455&rft.pages=407&rft.date=1995&rft.issn=0004-637X&rft_id=info%3Adoi%2F10.1086%2F176587&rft_id=info%3Abibcode%2F1995ApJ...455..407A&rft.aulast=Abt&rft.aufirst=H+A&rft_id=https%3A%2F%2Fdoi.org%2F10.1086%252F176587&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-:0-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:0_12-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOsterbrock1995" class="citation journal cs1">Osterbrock, Donald E. (1995-01-01). <a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F175049">"Founded in 1895 by George E. Hale and James E. Keeler: The Astrophysical Journal Centennial"</a>. <i>The Astrophysical Journal</i>. <b>438</b>: 4–6. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1995ApJ...438....1O">1995ApJ...438....1O</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F175049">10.1086/175049</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-637X">0004-637X</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Founded+in+1895+by+George+E.+Hale+and+James+E.+Keeler%3A+The+Astrophysical+Journal+Centennial&rft.volume=438&rft.pages=4-6&rft.date=1995-01-01&rft.issn=0004-637X&rft_id=info%3Adoi%2F10.1086%2F175049&rft_id=info%3Abibcode%2F1995ApJ...438....1O&rft.aulast=Osterbrock&rft.aufirst=Donald+E.&rft_id=https%3A%2F%2Fdoi.org%2F10.1086%252F175049&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHelmut_A._Abt1995" class="citation journal cs1">Helmut A. Abt (1 December 1995). <a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F176507">"Obituary – Chandrasekhar, Subrahmanyan"</a>. <i>The Astrophysical Journal</i>. <b>454</b>: 551. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1995ApJ...454..551A">1995ApJ...454..551A</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F176507">10.1086/176507</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-637X">0004-637X</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=Obituary+%E2%80%93+Chandrasekhar%2C+Subrahmanyan&rft.volume=454&rft.pages=551&rft.date=1995-12-01&rft.issn=0004-637X&rft_id=info%3Adoi%2F10.1086%2F176507&rft_id=info%3Abibcode%2F1995ApJ...454..551A&rft.au=Helmut+A.+Abt&rft_id=https%3A%2F%2Fdoi.org%2F10.1086%252F176507&rfr_id=info%3Asid%2Fen.wikipedia.org%3AThe+Astrophysical+Journal" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=The_Astrophysical_Journal&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://iopscience.org/apj"><i>The Astrophysical Journal</i></a> official website and journal issues from 1995–present</li> <li><a rel="nofollow" class="external text" href="http://iopscience.org/apjs"><i>The Astrophysical Journal Supplement Series</i></a> official website</li> <li><a rel="nofollow" class="external text" href="http://iopscience.org/apjl"><i>The Astrophysical Journal Letters</i></a> official website</li> <li><a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/search/p_=0&q=bibstem%3A%22ApJ%22%20%20pubdate%3A%5B1895-01%20TO%201995-01%5D&sort=date%20desc%2C%20bibcode%20desc">Digitized articles from 1895–1995</a> from <i>The Astrophysical Journal</i> via <a href="/wiki/Astrophysics_Data_System" title="Astrophysics Data System">ADS</a></li> <li><a rel="nofollow" class="external text" href="https://catalog.hathitrust.org/Record/102411049">Digitized issues from 1895–1928</a> of <i>The Astrophysical Journal</i> via <a href="/wiki/HathiTrust" title="HathiTrust">HathiTrust</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=The_Astrophysical_Journal&oldid=1257978800">https://en.wikipedia.org/w/index.php?title=The_Astrophysical_Journal&oldid=1257978800</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Astronomy_journals" title="Category:Astronomy journals">Astronomy journals</a></li><li><a href="/wiki/Category:Astrophysics_journals" title="Category:Astrophysics journals">Astrophysics journals</a></li><li><a href="/wiki/Category:IOP_Publishing_academic_journals" title="Category:IOP Publishing academic journals">IOP Publishing academic journals</a></li><li><a href="/wiki/Category:University_of_Chicago_Press_academic_journals" title="Category:University of Chicago Press academic journals">University of Chicago Press academic journals</a></li><li><a href="/wiki/Category:Academic_journals_established_in_1895" title="Category:Academic journals established in 1895">Academic journals established in 1895</a></li><li><a href="/wiki/Category:English-language_journals" title="Category:English-language journals">English-language journals</a></li><li><a href="/wiki/Category:American_Astronomical_Society_academic_journals" title="Category:American Astronomical Society academic journals">American Astronomical Society academic journals</a></li><li><a href="/wiki/Category:Online-only_journals" title="Category:Online-only journals">Online-only journals</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Triannual_journals_(infobox)" title="Category:Triannual journals (infobox)">Triannual journals (infobox)</a></li><li><a href="/wiki/Category:Open_access_journals_(infobox)" title="Category:Open access journals (infobox)">Open access journals (infobox)</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 17 November 2024, at 14:15<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=The_Astrophysical_Journal&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.canary-67ffd876-wlhcp","wgBackendResponseTime":131,"wgPageParseReport":{"limitreport":{"cputime":"0.316","walltime":"0.393","ppvisitednodes":{"value":2515,"limit":1000000},"postexpandincludesize":{"value":51999,"limit":2097152},"templateargumentsize":{"value":3878,"limit":2097152},"expansiondepth":{"value":17,"limit":100},"expensivefunctioncount":{"value":3,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":43579,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 355.430 1 -total"," 40.21% 142.902 1 Template:Reflist"," 37.04% 131.641 1 Template:Infobox_journal"," 26.77% 95.162 1 Template:Infobox"," 23.46% 83.377 4 Template:Cite_web"," 20.99% 74.595 2 Template:Short_description"," 11.47% 40.775 3 Template:Namespace_detect"," 10.93% 38.838 4 Template:Pagetype"," 8.27% 29.391 6 Template:Cite_journal"," 8.18% 29.091 9 Template:Main_other"]},"scribunto":{"limitreport-timeusage":{"value":"0.165","limit":"10.000"},"limitreport-memusage":{"value":5859120,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-8p8br","timestamp":"20241122142620","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"The Astrophysical Journal","url":"https:\/\/en.wikipedia.org\/wiki\/The_Astrophysical_Journal","sameAs":"http:\/\/www.wikidata.org\/entity\/Q598789","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q598789","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2003-04-12T15:00:09Z","dateModified":"2024-11-17T14:15:13Z","headline":"scientific journal (0004-637X)"}</script> </body> </html>