ToTaLLy StELLaR dude

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	ToTaLLy StELLaR dude

bookchick49

11-20-2009 7:18 AM

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tags:

astrophysical, novas, science, space, stars

bookchick49 says:

Furthermore...
"Combining the NACO images with data obtained with several other telescopes [5] the astronomers could determine the distance of the system - about 25,000 light-years from the Sun - and its intrinsic brightness - over 10,000 times brighter than the Sun. This implies that the vampire white dwarf in this system has a high mass that is near its fatal limit and is still simultaneously being fed by its companion at a high rate."

A GOOD READ

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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:#0099cc;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://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/ae7d9cdb-e27c-4847-882d-73aa12539ffa/32D52F54-D134-4A62-828A-F04B053508A3/" 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.jb.man.ac.uk/news/2009/timebomb/" href="http://www.jb.man.ac.uk/news/2009/timebomb/" style="font-size: 11px;">www.jb.man.ac.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.jb.man.ac.uk/news/2009/timebomb/"><h1 id="AutoGeneratedID-0">Ticking Stellar Time Bomb Identified</h1></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.jb.man.ac.uk/news/2009/timebomb/"><p id="AutoGeneratedID-1">17 November 2009</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.jb.man.ac.uk/news/2009/timebomb/"><p id="AutoGeneratedID-5">
One defining characteristic of Type Ia supernovae is the lack of evidence for hydrogen in the light they produce. Yet hydrogen is the most common chemical element in the Universe. Such supernovae most likely arise in systems composed of two stars, one of them being a white dwarf. When such white dwarfs, acting as stellar vampires that suck matter from their companion, become heavier than a given limit, they become unstable and explode [4]. 
</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.jb.man.ac.uk/news/2009/timebomb/">"As the white dwarf feeds on its companion, the captured gas accumulates on its surface until thermonuclear reactions begin, causing a massive explosion which ejects matter out into space at phenomenal speeds."
</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.jb.man.ac.uk/news/2009/timebomb/">"If the white dwarf is increasing in mass then it will eventually reach a point where it will be ripped apart in a titanic supernova explosion and its cycle of outbursts will come to an end."
</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.jb.man.ac.uk/news/2009/timebomb/">From the findings, in the 20 November edition of the Astrophysical Journal</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/32D52F54-D134-4A62-828A-F04B053508A3/blog/" title="blog or email this clip"><img src="http://content6.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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