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  5. <title>UTas ePrints - An Upper Limit to the Age of the Galactic Bar</title>
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  26. <meta content="Galaxy: disk—Galaxy: structure—stars: carbon" name="eprints.keywords" />
  27. <meta content="Using data from the Two Micron All Sky Survey, we identify a population of infrared carbon stars with
  28. J-Ks ≥ 2 in the Milky Way. These stars are shown to trace the stellar bar previously identified in IR and optical S
  29. surveys. The properties of C stars strongly suggest that they are of intermediate age. We conclude that the bar
  30. is likely to have formed more recently than 3 Gyr ago and must be younger than 6 Gyr. Implications and further
  31. tests of this conclusion are briefly discussed" name="eprints.abstract" />
  32. <meta content="2002-07-20" name="eprints.date" />
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  110. <meta content="Using data from the Two Micron All Sky Survey, we identify a population of infrared carbon stars with
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  226. <h1 class="ep_tm_pagetitle">An Upper Limit to the Age of the Galactic Bar</h1>
  227. <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Cole, A.A.</span> and <span class="person_name">Weinberg, M.D.</span> (2002) <xhtml:em>An Upper Limit to the Age of the Galactic Bar.</xhtml:em> The Astrophysical Journal Letters, 574 . pp. 43-46.</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2516/1/16382.web.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2516/1/16382.web.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />141Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3309" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.journals.uchicago.edu/ApJ/ApJLMain.html">http://www.journals.uchicago.edu/ApJ/ApJLMain.html</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Using data from the Two Micron All Sky Survey, we identify a population of infrared carbon stars with&#13;
  228. J-Ks ≥ 2 in the Milky Way. These stars are shown to trace the stellar bar previously identified in IR and optical S&#13;
  229. surveys. The properties of C stars strongly suggest that they are of intermediate age. We conclude that the bar&#13;
  230. is likely to have formed more recently than 3 Gyr ago and must be younger than 6 Gyr. Implications and further&#13;
  231. tests of this conclusion are briefly discussed</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Galaxy: disk—Galaxy: structure—stars: carbon</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/240101.html">240000 Physical Sciences &gt; 240100 Astronomical Sciences &gt; 240101 Astronomy and Astrophysics</a><br /><a href="http://eprints.utas.edu.au/view/subjects/240100.html">240000 Physical Sciences &gt; 240100 Astronomical Sciences</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2516</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr. A.A. Cole</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">22 Nov 2007 13:40</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2516;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2516">item control page</a></p>
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