Two stars have identical masses,but star A is part of Population I and star B is part of Population II.
How do these stars compare,if they are both on the main sequence?

Question

Quizplus · Accepted Answer

Population I stars, like Star A, are typically younger and have a higher metallicity compared to Population II stars, like Star B. This higher metallicity allows Population I stars to be hotter on the main sequence compared to Population II stars of the same mass.

Two Stars Have Identical Masses,but Star a Is Part of Population