Question

The estimated lifetime of the Sun on the main sequence is ~ 1010 years. Calculate the main sequence lifetime of stars of masses (i) 5 MΘ and (ii) 0.2 MΘ.

01 Feb 2018
Answer :
Word Count : 58

from formula, M= (t⊙/t) 1/3M⊙

=> t = (M⊙/M)3 t⊙

As,

i. M= 5M⊙

t = (M⊙/M)3 t⊙

t = (M⊙/5M⊙)3 x

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