Simfish
Aug20-04, 06:17 PM
Hi,
First of all, would very bright blue main sequence stars (for example, the stars in Orion's belt and Spica) first become a star like Rigel or Deneb, and then gradually move towards a star like Betelgeuse in the H-R diagram? Or will they suddenly envelope into a Betelgeuse-like star?
If yes to the first question, then my question is answered. If not, then I have another question.
What exactly were Rigel and Deneb and will they ultimately become a Betelgeuse?
Also, why do so many astronomy textbooks say that the sun will turn into a red supergiant in the last stages of its life? It's only going to have enough mass to become a red giant anyhow.
Thanks!
T_Simfish
First of all, would very bright blue main sequence stars (for example, the stars in Orion's belt and Spica) first become a star like Rigel or Deneb, and then gradually move towards a star like Betelgeuse in the H-R diagram? Or will they suddenly envelope into a Betelgeuse-like star?
If yes to the first question, then my question is answered. If not, then I have another question.
What exactly were Rigel and Deneb and will they ultimately become a Betelgeuse?
Also, why do so many astronomy textbooks say that the sun will turn into a red supergiant in the last stages of its life? It's only going to have enough mass to become a red giant anyhow.
Thanks!
T_Simfish