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-   -   Lifespan of red giant stars (http://www.physicsforums.com/showthread.php?t=566282)

robertrej Jan9-12 05:14 PM

Lifespan of red giant stars
 
I have been unable to find any data or formula's on how long red giant type stars last
other than a few million years!One would suppose that it is a function of its original mass
and chemical composition.


Any ideas?
Thanks.
Bob

jedishrfu Jan9-12 05:34 PM

Re: Lifespan of red giant stars
 
try this site:

http://www.atlasoftheuniverse.com/startype.html

Chronos Jan9-12 07:37 PM

Re: Lifespan of red giant stars
 
It is certainly mass dependent. Massive stars live hard and die young - often spectacularly. Their red giant phase may only last a few million years. A 98 pound weakling star like our sun can spend a billion or so years as a red giant before quietly retiring as a white dwarf and eventually become a cold, dark cinder, but, the universe is not nearly old enough to believe any such 'black dwarfs' yet exist.

robertrej Jan9-12 08:35 PM

Re: Lifespan of red giant stars
 
The website: http://www.atlasoftheuniverse.com/startype.html

was about what I was looking for and will find that info very useful.


Thanks very much
Bob


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