항성의 탄생 | 항성 | 천체 | 천문학습관

<!DOCTYPE html> <html lang="ko">     <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> <meta name="description" content=""> <meta name="author" content=""> <meta name="keyword" content=""> <link rel="shortcut icon" href="/resources/images/favicon.ico"> <title> 항성의 탄생 | 항성 | 천체 | 천문학습관 | 천문우주지식정보 </title> <link href="/resources/css/bootstrap.css" rel="stylesheet"> <link href="/resources/css/datepicker.css" rel="stylesheet"> <link href="/resources/css/common.css" rel="stylesheet"> <link href="/resources/css/font-awesome.min.css" rel="stylesheet"> <link href="/resources/css/print.css" rel="stylesheet"> <script type="text/javascript" src="/resources/js/jquery.min.js"></script> <script type="text/javascript" src="/resources/js/jquery.easing.js"></script> <script type="text/javascript" src="/resources/js/common.js"></script> <script 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result != null ) { for (var i=0; i<result.length; i++) { utf += String.fromCharCode(result[i].replace("&#", "")); } return utf; } } $(function(){ var menu_1_name = $('#location_wrap .location > div[class="dropdown"]').eq(0).find('a').find('span').text(); //var page_seq = '6372'; //천문학습관. if ( '천문학습관' == menu_1_name ) { //if ( page_seq > 5026 && page_seq < 6367 ) { //유니코드 변환처리. $('.content_wrap uni').each(function(){ $(this).text(unicode2Utf($(this).text())); }); $("table").each(function(){ var table_class = $(this).attr('class'); $(this).removeAttr('class'); $(this).prop('class','table tbl_cnt tbl_border'); if ( table_class != undefined && table_class.indexOf('tbl_border_none') > -1 ) { $(this).addClass('tbl_border_none'); } }); $("div[class^='lea_img'] img").each(function(index){ $(this).attr('data-toggle','modal'); $(this).attr('data-target','#lea_modal'+index); var img_alt = $(this).attr('alt'); if ( img_alt == undefined ) { img_alt = ''; $(this).attr('alt',''); } //img 클릭 시, 모달로 크게 보기. $("div[class='content_wrap']").append('<div class="modal lea_modal Submodal fade" id="lea_modal' + index + '" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"><div class="modal-dialog"><button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button><img src="' + $(this).attr('src') + '" alt="' + img_alt + '" /></div></div>'); }); } //파일 다운로드 $("a[downaftnm]:not(a[preview])").each(function(){ $(this).prop("href", "javascript:downLocation('" + $(this).attr('downaftnm') + "','" + $(this).attr('downbefnm') + "');"); $(this).prop("onkeypress", "this.onclick();"); $(this).removeAttr('downaftnm'); $(this).removeAttr('downbefnm'); $(this).removeAttr('target'); }); //파일 미리보기 $("a[preview]").each(function(){ $(this).prop("href", "javascript:filePreview('" + $(this).attr('downaftnm') + "','','/content/view');"); $(this).prop("onkeypress", "this.onclick();"); $(this).removeAttr('downaftnm'); $(this).removeAttr('downbefnm'); $(this).removeAttr('preview'); $(this).removeAttr('target'); }); }); </script> </head> <body>  <div id="accessibility"> <a href="#cont_skip">본문 바로가기</a> <a href="#header_wrap">메뉴바로가기</a> </div>   <div id="sub_wrap">  <script type="text/javascript" src="/resources/js/search/search.js"></script> <script type="text/javascript"> $(function(){ if($(".depth_3").length || $(".tab").length || $(".step").length){ $(".depth_3 li a, .tab li a, .step li .cont").matchHeight({ byRow: true, property: 'height', target: null, remove: false }); } //메뉴 var navMenu = $("#nav li"), childUl = $('ul'); $.fn.showMenu = function() { return $(this).children(childUl).stop().addClass('on'); } $.fn.hideMenu = function() { return $(this).children(childUl).stop().removeClass('on'); } navMenu.mouseover($.fn.showMenu); navMenu.mouseleave($.fn.hideMenu); navMenu.focusin($.fn.showMenu); navMenu.next().focusin(function(){ $(this).siblings().children(childUl).stop().removeClass('on'); }); navMenu.next('li:last').focusout(function(){ navMenu.children(childUl).stop().removeClass('on'); }); // 서브메뉴 포커스 추가 $('.home>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').hide(); }) $('div[class="location"] div:eq(1)>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').show(); $('div[class="location"] div:eq(2)>ul').hide(); }) $('div[class="location"] div:eq(2)>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').hide(); $('div[class="location"] div:eq(2)>ul').show(); $('div[class="location"] div:eq(3)>ul').hide(); }) $('div[class="location"] div:eq(3)>a').focus(function(){ $('div[class="location"] div:eq(2)>ul').hide(); $('div[class="location"] div:eq(3)>ul').show(); $('div[class="location"] div:eq(4)>ul').hide(); }) $('div[class="location"] div:eq(4)>a').focus(function(){ $('div[class="location"] div:eq(3)>ul').hide(); $('div[class="location"] div:eq(4)>ul').show(); }) $('.facebook').focus(function(){ $('div[class="location"] div:eq(2)>ul').hide(); $('div[class="location"] div:eq(3)>ul').hide(); $('div[class="location"] div:eq(4)>ul').hide(); }) $('a[href="#header_wrap"]').on('click',function(){ setTimeout(function(){ $('div[class="header grab"] nav ul li:eq(0) a:eq(0)').focus(); },0) }) $('a[href="#gnb"]').on('click',function(){ setTimeout(function(){ $('div[class="header grab"] nav ul li:eq(0) a:eq(0)').focus(); },0) }) }); </script>  <header id="header_wrap"> <div class="header grab"> <h1><a class="navbar-brand" href="/index"> <img src="/resources/images/logo.png" alt="KASI 한국천문연구원 천문우주지식정보" class="sub_logo"> <img src="/resources/images/main_logo.png" alt="KASI 한국천문연구원 천문우주지식정보" class="main_logo"> <img src="/resources/images/common/logo_mobile.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo"> <img src="/resources/images/common/logo_mobile_w.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo_w"> </a></h1> <nav id="gnb"> <h2 class="sr-only">주메뉴</h2> <ul id="nav" class="nav"> <li> <a href="/life/pageView/39">생활천문관</a> <ul> <li> <a href="/life/pageView/8">음양력변환계산</a> </li> <li> <a href="/life/pageView/5">월별 음양력</a> </li> <li> <a href="/life/post/calendarData">달력자료(월력요항)</a> </li> <li> <a href="/life/pageView/9">일출일몰시각계산</a> </li> <li> <a href="/life/pageView/6">월별 해/달 출몰시각</a> </li> <li> <a href="/life/pageView/10">태양 고도/방위각계산</a> </li> <li> <a href="/life/pageView/7">월별 천문현상</a> </li> </ul> </li> <li> <a href="/learning/pageView/40" class="active">천문학습관</a> <ul> <li> <a href="/learning/pageView/5108">태양계</a> </li> <li> <a href="/learning/pageView/6233">일식</a> </li> <li> <a href="/learning/pageView/5934">월식</a> </li> <li> <a href="/learning/pageView/6372">천체</a> </li> <li> <a href="/learning/pageView/5204">천체물리학</a> </li> <li> <a href="/learning/pageView/5053">우주탐사</a> </li> <li> <a href="/learning/pageView/5058">별자리</a> </li> <li> <a href="/learning/pageView/5064">망원경</a> </li> <li> <a href="/learning/post/educationVideo">천문우주 동영상</a> </li> <li> <a href="/learning/pageView/6384">천문학자</a> </li> <li> <a href="/learning/pageView/1623">논문</a> </li> </ul> </li> <li> <a href="/almanac/pageView/41">천문기록관</a> <ul> <li> <a href="/almanac/pageView/26?file=/file/astro_almanac_pdf/20231023135218580.pdf">역서별</a> </li> <li> <a href="/almanac/pageView/27">연도별</a> </li> <li> <a href="/almanac/pageView/24">천문 기록 검색</a> </li> </ul> </li> <li> <a href="/publicdata/pageView/6437">공공데이터</a> <ul> <li> <a href="/publicdata/pageView/6438">은하중심 24시</a> </li> <li> <a href="/publicdata/pageView/6441">우리의 별 태양</a> </li> <li> <a href="/publicdata/pageView/6445">우주로부터의 라디오 방송</a> </li> </ul> </li> <li> <a href="/community/post/faq">천문지식참여</a> <ul> <li> <a href="/community/post/faq">자주하는 질문</a> </li> </ul> </li> <li> <a href="/information/pageView/31">정보공개&활용</a> <ul> <li> <a href="/information/pageView/31">Open API</a> </li> <li> <a href="/information/ticker/pageView/32">티커서비스</a> </li> <li> <a href="">천문갤러리</a> </li> </ul> </li> </ul> <a href='#' class="mobile-nav-link"></a> </nav>  <div class="header_btn"> <a href="#none" title="사이트맵 바로가기" class="sitemap" data-toggle="modal" data-target="#siteMapModal"><i class="ico_sitemap"><span class="sr-only">사이트맵</span></i></a> <a href="#" title="통합검색 바로가기" class="search" id="btnSearch"><i class="ico_search"><span class="sr-only">검색</span></i></a> </div>  </div> <nav class="mobile_nav"> <div class="nav-menu"> <div class="top-btn"> <a href="#" data-toggle="modal" data-target="#siteMapModal" class="b_sitemap">사이트맵</a> <a href="/search/search" class="b_search">통합검색</a> </div> <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true"> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_1" aria-expanded="true" aria-controls="depth1_1"> 생활천문관 </a> <div id="depth1_1" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_1"> <div class="depth2_list"> <a href="/life/pageView/8">음양력변환계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/5">월별 음양력</a> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth1_03" aria-expanded="true" aria-controls="depth1_03"> 달력자료(월력요항) </a> <div id="depth1_03" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_03"> <div class="depth3_list"><a href="/life/post/calendarData">달력자료</a></div> <div class="depth3_list"><a href="/life/post/almanac">월력요항</a></div> </div> </div> </div> <div class="depth2_list"> <a href="/life/pageView/9">일출일몰시각계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/6">월별 해/달 출몰시각</a> </div> <div class="depth2_list"> <a href="/life/pageView/10">태양 고도/방위각계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/7">월별 천문현상</a> </div> </div> </div> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_2" aria-expanded="true" aria-controls="depth1_2"> 천문학습관 </a> <div id="depth1_2" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_2"> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_01" aria-expanded="true" aria-controls="depth2_01"> 태양계 </a> <div id="depth2_01" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_01"> <div class="depth3_list"><a href="/learning/pageView/5108">태양계 개요</a></div> <div class="depth3_list"><a href="/learning/pageView/5123">태양</a></div> <div class="depth3_list"><a href="/learning/pageView/5132">수성</a></div> <div class="depth3_list"><a href="/learning/pageView/5135">금성</a></div> <div class="depth3_list"><a href="/learning/pageView/5138">지구</a></div> <div class="depth3_list"><a href="/learning/pageView/5145">화성</a></div> <div class="depth3_list"><a href="/learning/pageView/5148">목성</a></div> <div class="depth3_list"><a href="/learning/pageView/5152">토성</a></div> <div class="depth3_list"><a href="/learning/pageView/5157">천왕성</a></div> <div class="depth3_list"><a href="/learning/pageView/5161">해왕성</a></div> <div class="depth3_list"><a href="/learning/pageView/5165">왜소행성</a></div> <div class="depth3_list"><a href="/learning/pageView/5168">소행성</a></div> <div class="depth3_list"><a href="/learning/pageView/5172">혜성</a></div> <div class="depth3_list"><a href="/learning/pageView/5175">유성</a></div> <div class="depth3_list"><a href="/learning/pageView/5027">카이퍼 벨트</a></div> <div class="depth3_list"><a href="/learning/pageView/5028">오르트 구름</a></div> <div class="depth3_list"><a href="/learning/pageView/5178">우주천문학</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_02" aria-expanded="true" aria-controls="depth2_02"> 일식 </a> <div id="depth2_02" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_02"> <div class="depth3_list"><a href="/learning/pageView/6299">1991~2000</a></div> <div class="depth3_list"><a href="/learning/pageView/6189">2001~2010</a></div> <div class="depth3_list"><a href="/learning/pageView/6209">2011~2020</a></div> <div class="depth3_list"><a href="/learning/pageView/6233">2021~2030<span class="label">2024</span></a></div> <div class="depth3_list"><a href="/learning/pageView/6255">2031~2040</a></div> <div class="depth3_list"><a href="/learning/pageView/6277">2041~2050</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_03" aria-expanded="true" aria-controls="depth2_03"> 월식 </a> <div id="depth2_03" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_03"> <div class="depth3_list"><a href="/learning/pageView/5773">1951~1960</a></div> <div class="depth3_list"><a href="/learning/pageView/5796">1961~1970</a></div> <div class="depth3_list"><a href="/learning/pageView/5819">1971~1980</a></div> <div class="depth3_list"><a href="/learning/pageView/5842">1981~1990</a></div> <div class="depth3_list"><a href="/learning/pageView/5888">1991~2000</a></div> <div class="depth3_list"><a href="/learning/pageView/5864">2001~2010</a></div> <div class="depth3_list"><a href="/learning/pageView/5911">2011~2020</a></div> <div class="depth3_list"><a href="/learning/pageView/5934">2021~2030<span class="label">2024</span></a></div> <div class="depth3_list"><a href="/learning/pageView/5956">2031~2040</a></div> <div class="depth3_list"><a href="/learning/pageView/5979">2041~2050</a></div> <div class="depth3_list"><a href="/learning/pageView/6322">2051~2060</a></div> <div class="depth3_list"><a href="/learning/pageView/6345">2061~2070</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_04" aria-expanded="true" aria-controls="depth2_04"> 천체 </a> <div id="depth2_04" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_04"> <div class="depth3_list"><a href="/learning/pageView/6372">항성</a></div> <div class="depth3_list"><a href="/learning/pageView/5198">성운과 성단</a></div> <div class="depth3_list"><a href="/learning/pageView/5201">은하</a></div> <div class="depth3_list"><a href="/learning/pageView/5038">메시에 목록</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_05" aria-expanded="true" aria-controls="depth2_05"> 천체물리학 </a> <div id="depth2_05" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_05"> <div class="depth3_list"><a href="/learning/pageView/5204">행성의 거리</a></div> <div class="depth3_list"><a href="/learning/pageView/5206">밝기</a></div> <div class="depth3_list"><a href="/learning/pageView/5208">스펙트럼</a></div> <div class="depth3_list"><a href="/learning/pageView/5042">색깔과 온도</a></div> <div class="depth3_list"><a href="/learning/pageView/5209">별의 위치</a></div> <div class="depth3_list"><a href="/learning/pageView/5214">별의 거리</a></div> <div class="depth3_list"><a href="/learning/pageView/5224">천체역학</a></div> <div class="depth3_list"><a href="/learning/pageView/5230">역학</a></div> <div class="depth3_list"><a href="/learning/pageView/6387">이론</a></div> <div class="depth3_list"><a href="/learning/pageView/6380">우주론</a></div> <div class="depth3_list"><a href="/learning/pageView/5048">천문단위</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_06" aria-expanded="true" aria-controls="depth2_06"> 우주탐사 </a> <div id="depth2_06" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_06"> <div class="depth3_list"><a href="/learning/pageView/5053">로켓의 발달</a></div> <div class="depth3_list"><a href="/learning/pageView/5054">우주왕복선</a></div> <div class="depth3_list"><a href="/learning/pageView/5258">태양계 탐사</a></div> <div class="depth3_list"><a href="/learning/pageView/5262">외계행성 찾기</a></div> <div class="depth3_list"><a href="/learning/pageView/5264">외계생명체 찾기</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_07" aria-expanded="true" aria-controls="depth2_07"> 별자리 </a> <div id="depth2_07" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_07"> <div class="depth3_list"><a href="/learning/pageView/5058">별자리 기원</a></div> <div class="depth3_list"><a href="/learning/pageView/5059">별자리 상식</a></div> <div class="depth3_list"><a href="/learning/pageView/5267">북반구의 별자리</a></div> <div class="depth3_list"><a href="/learning/pageView/5272">별자리 전설</a></div> <div class="depth3_list"><a href="/learning/pageView/5324">별자리 구성</a></div> <div class="depth3_list"><a href="/learning/pageView/5376">동양의 별자리</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_08" aria-expanded="true" aria-controls="depth2_08"> 망원경 </a> <div id="depth2_08" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_08"> <div class="depth3_list"><a href="/learning/pageView/5064">역사</a></div> <div class="depth3_list"><a href="/learning/pageView/5387">원리</a></div> <div class="depth3_list"><a href="/learning/pageView/5390">종류</a></div> <div class="depth3_list"><a href="/learning/pageView/5394">가대</a></div> <div class="depth3_list"><a href="/learning/pageView/5396">활용</a></div> <div class="depth3_list"><a href="/learning/pageView/5069">선택방법</a></div> <div class="depth3_list"><a href="/learning/pageView/5402">관련부품</a></div> <div class="depth3_list"><a href="/learning/pageView/6388">국내천문대</a></div> <div class="depth3_list"><a href="/learning/pageView/6394">세계의 망원경</a></div> <div class="depth3_list"><a href="/learning/pageView/5384">고천문의기</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a 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mobileTab.find('.mobile_depth2').text($(depths[1]).text()); }) </script> <div class="modal Submodal familySiteModal fade" id="familySiteModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-dialog" id="siteContent"> <h3 class="h3_title_noimg">관련사이트</h3> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button><div class="sr-only">모달창 닫기</div> </div> </div>   <section id="container" class="container" tabindex="0"> <div id="printbody">  <div class="panel-group left_nav" role="tablist" aria-multiselectable="true"> <div class="panel panel-default"> <a data-toggle="collapse" role="tab" id="leftNav1" data-parent="#accordion" href="#leftNav1_drop" aria-expanded="true" aria-controls="leftNav1_drop"> 태양계 </a> <ul id="leftNav1_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav1"> <li> <a href="/learning/pageView/5108">태양계 개요 </a> </li> <li> <a 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aria-controls="leftNav2_drop"> 일식 </a> <ul id="leftNav2_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav2"> <li> <a href="/learning/pageView/6299">1991~2000 </a> </li> <li> <a href="/learning/pageView/6189">2001~2010 </a> </li> <li> <a href="/learning/pageView/6209">2011~2020 </a> </li> <li> <a href="/learning/pageView/6233">2021~2030 <span class="label">2024</span> </a> </li> <li> <a href="/learning/pageView/6255">2031~2040 </a> </li> <li> <a href="/learning/pageView/6277">2041~2050 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav3" data-parent="#accordion" href="#leftNav3_drop" aria-expanded="true" aria-controls="leftNav3_drop"> 월식 </a> <ul id="leftNav3_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav3"> <li> <a href="/learning/pageView/5773">1951~1960 </a> </li> <li> <a href="/learning/pageView/5796">1961~1970 </a> </li> <li> <a href="/learning/pageView/5819">1971~1980 </a> </li> <li> <a href="/learning/pageView/5842">1981~1990 </a> </li> <li> <a href="/learning/pageView/5888">1991~2000 </a> </li> <li> <a href="/learning/pageView/5864">2001~2010 </a> </li> <li> <a href="/learning/pageView/5911">2011~2020 </a> </li> <li> <a href="/learning/pageView/5934">2021~2030 <span class="label">2024</span> </a> </li> <li> <a href="/learning/pageView/5956">2031~2040 </a> </li> <li> <a href="/learning/pageView/5979">2041~2050 </a> </li> <li> <a href="/learning/pageView/6322">2051~2060 </a> </li> <li> <a href="/learning/pageView/6345">2061~2070 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav4" data-parent="#accordion" href="#leftNav4_drop" aria-expanded="true" aria-controls="leftNavleftNav4_drop" class="active"> 천체 </a> <ul id="leftNav4_drop" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="leftNav4"> <li> <a href="/learning/pageView/6372" class="active">항성 </a> </li> <li> <a href="/learning/pageView/5198">성운과 성단 </a> </li> <li> <a href="/learning/pageView/5201">은하 </a> </li> <li> <a href="/learning/pageView/5038">메시에 목록 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav5" data-parent="#accordion" href="#leftNav5_drop" aria-expanded="true" aria-controls="leftNav5_drop"> 천체물리학 </a> <ul id="leftNav5_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav5"> <li> <a href="/learning/pageView/5204">행성의 거리 </a> </li> <li> <a href="/learning/pageView/5206">밝기 </a> </li> <li> <a href="/learning/pageView/5208">스펙트럼 </a> </li> <li> <a href="/learning/pageView/5042">색깔과 온도 </a> </li> <li> <a href="/learning/pageView/5209">별의 위치 </a> </li> <li> <a href="/learning/pageView/5214">별의 거리 </a> </li> <li> <a href="/learning/pageView/5224">천체역학 </a> </li> <li> <a href="/learning/pageView/5230">역학 </a> </li> <li> <a href="/learning/pageView/6387">이론 </a> </li> <li> <a href="/learning/pageView/6380">우주론 </a> </li> <li> <a href="/learning/pageView/5048">천문단위 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav6" data-parent="#accordion" href="#leftNav6_drop" aria-expanded="true" aria-controls="leftNav6_drop"> 우주탐사 </a> <ul id="leftNav6_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav6"> <li> <a href="/learning/pageView/5053">로켓의 발달 </a> </li> <li> <a href="/learning/pageView/5054">우주왕복선 </a> </li> <li> <a href="/learning/pageView/5258">태양계 탐사 </a> </li> <li> <a href="/learning/pageView/5262">외계행성 찾기 </a> </li> <li> <a href="/learning/pageView/5264">외계생명체 찾기 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav7" data-parent="#accordion" href="#leftNav7_drop" aria-expanded="true" aria-controls="leftNav7_drop"> 별자리 </a> <ul id="leftNav7_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav7"> <li> <a href="/learning/pageView/5058">별자리 기원 </a> </li> <li> <a href="/learning/pageView/5059">별자리 상식 </a> </li> <li> <a href="/learning/pageView/5267">북반구의 별자리 </a> </li> <li> <a href="/learning/pageView/5272">별자리 전설 </a> </li> <li> <a href="/learning/pageView/5324">별자리 구성 </a> </li> <li> <a href="/learning/pageView/5376">동양의 별자리 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav8" data-parent="#accordion" href="#leftNav8_drop" aria-expanded="true" aria-controls="leftNav8_drop"> 망원경 </a> <ul id="leftNav8_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav8"> <li> <a href="/learning/pageView/5064">역사 </a> </li> <li> <a href="/learning/pageView/5387">원리 </a> </li> <li> <a href="/learning/pageView/5390">종류 </a> </li> <li> <a href="/learning/pageView/5394">가대 </a> </li> <li> <a href="/learning/pageView/5396">활용 </a> </li> <li> <a href="/learning/pageView/5069">선택방법 </a> </li> <li> <a href="/learning/pageView/5402">관련부품 </a> </li> <li> <a href="/learning/pageView/6388">국내천문대 </a> </li> <li> <a href="/learning/pageView/6394">세계의 망원경 </a> </li> <li> <a href="/learning/pageView/5384">고천문의기 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav9" data-parent="#accordion" href="#leftNav9_drop" aria-expanded="true" aria-controls="leftNav9_drop"> 천문우주 동영상 </a> <ul id="leftNav9_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav9"> <li> <a href="/learning/post/educationVideo">천문우주 교육동영상 </a> </li> <li> <a href="/learning/post/mediaGallery">별별우주동영상 </a> </li> </ul> <a role="tab" id="leftNav10" data-parent="#accordion" href="/learning/pageView/6384" aria-expanded="true" aria-controls="leftNav10_drop"> 천문학자 </a> <ul id="leftNav10_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav10"> </ul> <a data-toggle="collapse" role="tab" id="leftNav11" data-parent="#accordion" href="#leftNav11_drop" aria-expanded="true" aria-controls="leftNav11_drop"> 논문 </a> <ul id="leftNav11_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav11"> <li> <a href="/learning/pageView/1623">한국천문학회지 </a> </li> <li> <a href="/learning/pageView/1628">한국우주과학회지 </a> </li> <li> <a href="/learning/pageView/6391">ADS 논문검색 </a> </li> </ul> </div> </div>  <div class="content_body_right" id="cont_skip"> <div class="box tab"> <ul class="cont w25"> <li class="active"><a href="/learning/pageView/6372">항성의 탄생</a></li> <li ><a href="/learning/pageView/6373">항성의 진화</a></li> <li ><a href="/learning/pageView/6374">항성의 죽음</a></li> <li ><a href="/learning/pageView/6376">항성의 구조</a></li> <li ><a href="/learning/pageView/6377">항성의 특징</a></li> <li ><a href="/learning/pageView/6378">항성의 종류</a></li> </ul> </div> <div class="content_wrap"> <h5>항성의 탄생</h5> <h6 class="first">항성 그리고 별</h6> <div>항성은 우리가 흔히 알고 있는 별의 또 다른 이름이다. 별은 영원에 비유되기도 하며, 항상 밤하늘에 존재한다. 하지만 이런 영원의 상징인 별에게도 탄생과 죽음이 있다. 단지 우리는 그 변화를 느끼지 못하는 것일 뿐이다. 그 이유는 우리가 평생을 지내는 시간이 별이 평생을 지내는 시간에 비하면 극히 작은 시간이기 때문이다. 인간의 평균 수명이 대략 100년인 것에 비하여, 평범한 별인 태양의 수명은 대략 100억 년이다. 이는 인간이 수십 세대에 걸쳐 태양을 관측한다 하더라도 태양의 1/수천만에 해당하는 삶을 볼 수 있는 것이다. 쉽게 예를 들어보면, 하루살이가 하루를 살며 인간의 모습을 관측하는 것과 유사하다. <br> <br>우리는 가끔 뉴스나 신문 등을 통해 별이 폭발했다는 소식을 듣는다. 이렇게 폭발하는 별을 '신성' 또는 '초신성'이라고 부르는데 이것은 별이 죽음에 이르는 순간을 말한다. 또한 별이 태어나고 있거나 또는 막 태어난 영역을 발견했다는 소식도 가끔 들을 수 있다. 여기서는 별이 태어나게 되는 과정에 대해서 살펴볼 것이며, 더 나아가서 별들이 태어나 어떤 삶을 살고, 마지막 순간에는 어떤 현상을 보이는지에 대해서 알아보게 될 것이다.</div><strong>항성 탄생 메커니즘(Mechanism)</strong> <div>별의 탄생 메커니즘은 우주공간에 존재하는 성간 물질(Interstellar Medium, ISM)과 관련이 깊다. 이 성간 물질은 우주공간에 존재하는 기체와 먼지들을 뜻하며, 이것들로부터 별이 탄생한다고 알려져 있다. 그러나 성간 물질이 있는 모든 곳에서 별이 탄생하는 것은 아니다. 별은 성간 물질의 밀도가 높고, 온도가 상대적으로 낮은 곳에서 태어난다고 알려져 있다. 성간 물질의 밀도가 높고 온도가 낮은 영역에서는 물질들의 운동에너지가 적어 비교적 쉽게 성간운이 수축하며, 이 수축으로 인해 중력적으로 더 낮은 에너지 상태를 갖게 된다. 중심의 수축부분이 일정 밀도에 이르면 이 지역은 광학적으로 두꺼워져서 중력붕괴가 단열적 과정이 된다. 그리고 중력붕괴가 단열과정이 되면 압력이 증가하고 정역학적 평형(중력과 압력에 의한 힘이 평형을 이루는 상태)이 이루어진다. 이러한 중심지역에 형성된 천체를 원시별이라 부른다. <br> <br> 성간운이 수축하는 과정이 계속 진행될수록 불투명도(Opacity)가 증가하면서 중심 온도가 높아지게 된다. 그리고 수축 초기에는 대부분의 성간운이 수소분자(H<sub style="line-height: 10px;">2</sub>)로 이루어져있으나, 중심온도가 약 1800K까지 올라가게 되면 수소분자가 해리되어 수소원자가 된다. 이 해리되는 과정은 흡열과정이며, 압력에 기여해야할 에너지들이 해리 과정에서 소모되면, 정역학적 평형을 이룰 수 없게 된다. 따라서 원시별의 중심은 다시 수축을 시작하고 주변의 물질들은 계속해서 유입된다. 원시별의 내부 온도가 충분히 높아지면 중심핵에서 핵융합반응이 시작되고, 여기서 나오는 에너지로 압력에 의한 힘이 중력과 평행을 이루게 된다. 이제 별은 안정된 주계열별이 된다.</div> <h6>탄생영역</h6> <div class="wrap_02"> <div class="lea_img w_310" style="height: 161px;"><img src="/file/astro_page/496077319101020.jpg" style="margin-top: -40%;" alt="오리온 대성운"></div> <div>우주 공간에는 수많은 먼지와 기체 그리고 우리가 살고 있는 지구와 같은 행성들, 우리에게서 가장 가까이 있는 별인 태양과 같은 별들이 무수히 많이 존재한다. 여기서 먼지와 기체들을 별과 별사이에 존재하는 물질이라 하여 성간 물질이라고 하는데, 별들은 바로 이 성간 물질로부터 태어난다.<br> <br>사진은 유명한 오리온자리 대 성운(M42, Messier 42)의 중심 영역이다. 왼쪽 가운데 부분에 빛나는 네 개의 별이 있는데, 이를 트라페지움(Trapezium)이라 한다. 이 트라페지움의 주변을 보면 가스와 먼지로 둘러싸인 희미한 별들이 있는 것을 발견할 수 있는데, 천문학자들은 이 희미한 별들이 새로운 항성계를 형성하고 있다고 추측하고 있다.</div></div><strong>원시성</strong> <div>별 탄생의 초기과정이 끝나고 정역학적 평형 상태에 도달한 별을 원시성 또는 원시별이라 한다. 이 원시별의 주변에 있던 물질들은 계속해서 표면으로 떨어지고, 원시별의 질량, 온도, 그리고 밀도가 증가하게 된다. 이렇게 증가한 원시성의 내부 온도는 바깥쪽보다 높아서 중심의 에너지가 원시성의 바깥쪽으로 대류에 의해 전달된다. 이러한 에너지 전달 과정을 거쳐서 원시별은 서서히 밝아지기 시작한다. 원시별의 주변에는 고밀도의 가스와 먼지로 둘러 쌓여있어서 가시광의 관측이 힘들고, 적외선관측과 분광기를 이용한 관측으로 원시별을 연구하고 있다.</div></div> <div id="upDateinfo" class="upDateinfo"> <span class="division_blue">최종수정일</span> <p class="date"> 2017년 6월 19일 </p> </div> </div> </div> </section>   <footer class="footer"> <div class="link"> <div class="grab"> <a class="fir" href="https://www.kasi.re.kr/kor/post/privacy" target="_blank">개인정보처리방침</a> <a href="/pageView/36">저작권정책</a> <button type="button" data-toggle="modal" id="prtcipSiteBtn" data-target="#familySiteModal"> 관련사이트 <img src="/resources/images/common/footer_ico_modal.png" alt="" class="ico_modal"> <img src="/resources/images/common/footer_ico_modal_w.png" alt="" class="ico_w_modal"> </button> <div class="clearfix"></div> </div> </div> <div class="grab"> <address class="address">(34055) 대전광역시 유성구 대덕대로 776     전화: 080-373-3333(무료) / 042-865-3333(유료)     천문정보 ARS: 042-865-3332     팩스: 042-861-5610</address> <p class="copyright">Copyright (C) 2017 Korea Astronomy and Space Science Institute. 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