How Long Do Red Giant Stars Last?

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    Red giant Stars
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SUMMARY

Red giant stars exhibit varying lifespans primarily determined by their original mass and chemical composition. Massive stars experience a brief red giant phase lasting only a few million years, while stars like our Sun can remain in this phase for approximately one billion years before transitioning to a white dwarf. The discussion highlights the importance of mass in stellar evolution and provides a useful resource for further exploration of star types at Atlas of the Universe.

PREREQUISITES
  • Understanding of stellar evolution concepts
  • Familiarity with mass-luminosity relationship in stars
  • Knowledge of red giant phase characteristics
  • Basic astronomy terminology
NEXT STEPS
  • Research the mass-luminosity relationship in stars
  • Explore the life cycle of stars, focusing on red giants
  • Investigate the transition from red giant to white dwarf
  • Study the characteristics and formation of black dwarfs
USEFUL FOR

Astronomy enthusiasts, astrophysicists, and students studying stellar evolution will benefit from this discussion, particularly those interested in the lifecycle of stars and their classifications.

robertrej
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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
 
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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.
 

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