21st Century Astronomy
21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 16, Problem 1QP
To determine

Ranking the main-sequence lifetimes of the stars.

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Answer to Problem 1QP

The required ranking from shortest to longest lifetime is c<e<f<b<d<a_.

Explanation of Solution

The life time of the main sequence stars are depend on the mass of the main sequence stars. The lifetime is inversely proportional to the mass. Thus, if the mass of the star is large, the lifetime will be less.

Here the highest mass is Rigel and lowest mass is Sun. Thus, the required ranking from shortest to longest lifetime is c<e<f<b<d<a_.

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