Re: Betelgeuse supernova?
- From: Ten Dog Lawn <perfumeit@xxxxxxx>
- Date: Mon, 02 May 2005 01:12:51 -0500
Brian Tung wrote:
> Jim wrote:
> > I'm not even *close* to being an expert - or a tallented amateur - but
> > I'm fairly sure red giants don't supernova. Generally the outer layers
> > puff away to form a planetary nebula, and the core collapses to form a
> > white dwarf.
>
> A Type II supernova progenitor is often a red supergiant, although the
> color may vary by metallicity; the low-metal progenitor of the 1987
> supernova in the LMC was a blue supergiant.
>
> Betelgeuse could supernova soon, but that "soon" is an astronomical
> "soon," measured in hundreds of thousands of years. It used to be
> thought that Betelgeuse could go at any moment, but I think current
> theory indicates that it would have to pass through a number of stages
> that are brief, but again only on the astronomical scale.
>
> I haven't yet heard anything about Betelgeuse going supernova in two
> or three days.
>
so it absolutely will not/cannot/shall not/must not happen! Or,..........
>
> Brian Tung <brian@xxxxxxx>
> The Astronomy Corner at http://astro.isi.edu/
> Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
> The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
> My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt
.
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