Teen galaxies hint of early Milky Way


	Teen galaxies hint of early Milky Way

pokkets

11-28-2007 2:00 AM

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tags:

galaxy, milky way, astronomy, astrophysics

pokkets says:

Astronomers think when it grows up, it could look just like it's distant cousin

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/6c94b05c-8372-465a-9e02-d85164090386/182006E3-CADC-4F10-817B-63BFE5AEC87D/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space" href="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space" style="font-size: 11px;">www.abc.net.au</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"> Ben Hirschler</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><P class="first">Astronomers have spotted the young building blocks of galaxies similar to the Milky Way for the first time, giving a tantalising glimpse of how our stellar backyard may have formed.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.abc.net.au/img/AD6D5517-2C47-4D5B-AAFD-256C43BCB5B0" alt="proto-galaxy" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><P>The discovery of 27 teenager, or proto-galaxies, is further evidence that galaxies like the Milky Way were created by the clumping of smaller clouds of gas and dust, researchers say.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><P>The team's findings will be published next year in the <A target="_blank" href="http://www.journals.uchicago.edu/ApJ/"><EM>Astrophysical Journal</EM></A>.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><P>Until now, the light from these adolescent galaxies was so faint that astronomers had struggled to prove they existed.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"><P>But by staring at the same patch of sky for 92 hours using some of the world's most powerful telescopes, Dr Martin Haehnelt of the <A target="_blank" href="http://www.cam.ac.uk/">University of Cambridge</A> and colleagues eventually picked out the light from 27 of the distant objects.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space">"We think that galaxies build up by the merging of smaller lumps.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2007/11/28/2103608.htm?site=science&topic=space"> but this is the first time we have seen lumps that are small enough to amalgamate into something like our galaxy," he says.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/182006E3-CADC-4F10-817B-63BFE5AEC87D/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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