Supernova from a supermassive star raises questions about stellar evolution | fr584's Blog

Archive observations by the Hubble Space Telescope have been used to identify the progenitor of a supernova seen in an external galaxy in 2005.  This highly luminous star, of around 100 solar masses, appears not to have evolved to the iron core stage required for collapse to initiate a supernova.  The observations may require modifications to theories of supernovare explosions, as occurred after the only other firm identification of a progenitor – that of SN 1987a.


Posted by fr584 at 06:45 on July 8th, 2009 at 6:45AM  
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