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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><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 biography vcard"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn">John S. Gallagher III</div></th></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data">1947 (age 76–77)<sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources in the body of the article. (November 2022)">not verified in body</span></a></i>]</sup></td></tr><tr><th scope="row" class="infobox-label">Citizenship</th><td class="infobox-data category">USA</td></tr><tr><th scope="row" class="infobox-label">Alma mater</th><td class="infobox-data">Princeton, University of Wisconsin-Madison</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><b>Scientific career</b></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Doctoral_advisor" title="Doctoral advisor">Doctoral advisor</a></th><td class="infobox-data">Arthur Code</td></tr><tr style="display:none"><td colspan="2"> </td></tr></tbody></table> <p><b>John (Jay) S. Gallagher III</b> is an American <a href="/wiki/Astronomer" title="Astronomer">astronomer</a> and an expert on star formation in external galaxies, dwarf galaxies and dark matter. He is the William Morgan Professor of Astronomy at the University of Wisconsin-Madison where he has been a professor since 1991. </p> <div class="mw-heading mw-heading2"><h2 id="Background">Background</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=John_Gallagher_III&action=edit&section=1" title="Edit section: Background"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>He was raised near <a href="/wiki/New_York_City" title="New York City">New York City</a> and received his undergraduate education at <a href="/wiki/Princeton_University" title="Princeton University">Princeton University</a>. He performed his graduate work at the <a href="/wiki/University_of_Wisconsin%E2%80%93Madison" title="University of Wisconsin–Madison">University of Wisconsin–Madison</a>, and was awarded a Ph.D in 1972. His supervisor was <a href="/wiki/Arthur_Code" title="Arthur Code">Arthur Code</a>. </p><p>After graduating he held positions at the <a href="/wiki/National_Optical_Astronomy_Observatory" title="National Optical Astronomy Observatory">National Optical Astronomy Observatory</a> and at the <a href="/wiki/University_of_Illinois_at_Urbana-Champaign" class="mw-redirect" title="University of Illinois at Urbana-Champaign">University of Illinois</a>, and was the director of the <a href="/wiki/Lowell_Observatory" title="Lowell Observatory">Lowell Observatory</a>.<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> He is currently a Professor of Astronomy at the <a href="/wiki/University_of_Wisconsin%E2%80%93Madison" title="University of Wisconsin–Madison">University of Wisconsin–Madison</a> and last Editor of the <a href="/wiki/Astronomical_Journal" class="mw-redirect" title="Astronomical Journal">Astronomical Journal</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Scientific_contributions">Scientific contributions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=John_Gallagher_III&action=edit&section=2" title="Edit section: Scientific contributions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some of Gallagher's major scientific contributions include a review article he wrote along with <a href="/wiki/Sandra_Faber" title="Sandra Faber">Sandra Faber</a> in 1979<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> that convinced most astronomers that dark matter was real<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2013)">citation needed</span></a></i>]</sup>. In the 1980s, with <a href="/wiki/Deidre_Hunter" title="Deidre Hunter">Deidre Hunter</a>, he made the first substantial studies of <a href="/wiki/Dwarf_irregular_galaxies" class="mw-redirect" title="Dwarf irregular galaxies">dwarf irregular galaxies</a>. He was later led research on some of the first methods for quantifying star formation in galaxies. Gallagher has made other major contributions towards our understanding of star formation in galaxies, the formation and evolution of low mass galaxies and stellar <a href="/wiki/Nova" title="Nova">nova</a>. </p><p>Gallagher was one of the leaders of the team which built the <a href="/wiki/Wide_Field_Planetary_Camera_2" class="mw-redirect" title="Wide Field Planetary Camera 2">Wide Field Planetary Camera 2</a> for the Hubble Space Telescope. </p> <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=John_Gallagher_III&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><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"><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://heritage.stsci.edu/2007/04/bio/bio_primary.html">"Science Team"</a>. <i>The Hubble Heritage Project</i>. Space Telescope Science Institute<span class="reference-accessdate">. Retrieved <span class="nowrap">2008-12-04</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Hubble+Heritage+Project&rft.atitle=Science+Team&rft_id=http%3A%2F%2Fheritage.stsci.edu%2F2007%2F04%2Fbio%2Fbio_primary.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJohn+Gallagher+III" class="Z3988"></span></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"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFaberGallager1979" class="citation journal cs1">Faber, S.M.; Gallager, J.S. (1979). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/full/1979ARA%26A..17..135F">"Masses and mass-to-light ratios of galaxies"</a>. <i>Annual Review of Astronomy and Astrophysics</i>. <b>17</b>. Palo Alto, California: Annual Reviews: 135–187. <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/1979ARA&A..17..135F">1979ARA&A..17..135F</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/10.1146%2Fannurev.aa.17.090179.001031">10.1146/annurev.aa.17.090179.001031</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Annual+Review+of+Astronomy+and+Astrophysics&rft.atitle=Masses+and+mass-to-light+ratios+of+galaxies&rft.volume=17&rft.pages=135-187&rft.date=1979&rft_id=info%3Adoi%2F10.1146%2Fannurev.aa.17.090179.001031&rft_id=info%3Abibcode%2F1979ARA%26A..17..135F&rft.aulast=Faber&rft.aufirst=S.M.&rft.au=Gallager%2C+J.S.&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Ffull%2F1979ARA%2526A..17..135F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AJohn+Gallagher+III" class="Z3988"></span></span> </li> </ol></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" 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=John_Gallagher_III&oldid=1217843621">https://en.wikipedia.org/w/index.php?title=John_Gallagher_III&oldid=1217843621</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:American_astronomers" title="Category:American astronomers">American astronomers</a></li><li><a href="/wiki/Category:American_science_teachers" title="Category:American science teachers">American science teachers</a></li><li><a href="/wiki/Category:University_of_Wisconsin%E2%80%93Madison_alumni" title="Category:University of Wisconsin–Madison alumni">University of Wisconsin–Madison alumni</a></li><li><a href="/wiki/Category:University_of_Wisconsin%E2%80%93Madison_faculty" title="Category:University of Wisconsin–Madison faculty">University of Wisconsin–Madison faculty</a></li><li><a href="/wiki/Category:University_of_Illinois_faculty" title="Category:University of Illinois faculty">University of Illinois faculty</a></li><li><a href="/wiki/Category:Princeton_University_alumni" title="Category:Princeton University alumni">Princeton University alumni</a></li><li><a href="/wiki/Category:Living_people" title="Category:Living people">Living people</a></li><li><a href="/wiki/Category:1947_births" title="Category:1947 births">1947 births</a></li><li><a href="/wiki/Category:The_Astronomical_Journal_editors" title="Category:The Astronomical Journal editors">The Astronomical Journal editors</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:All_articles_with_unsourced_statements" title="Category:All articles with unsourced statements">All articles with unsourced statements</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_November_2022" title="Category:Articles with unsourced statements from November 2022">Articles with unsourced statements from November 2022</a></li><li><a href="/wiki/Category:Articles_with_hCards" title="Category:Articles with hCards">Articles with hCards</a></li><li><a href="/wiki/Category:Articles_with_unsourced_statements_from_January_2013" title="Category:Articles with unsourced statements from January 2013">Articles with unsourced statements from January 2013</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 8 April 2024, at 05:55<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. 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