Select all that apply. The thickness of the main sequence in the H-R diagram is due...
Select all that apply. The thickness of the main sequence in the H-R diagram is due to:
A. The luminosities and surface temperatures of main-sequence stars changing slightly as they convert hydrogen to helium in their cores.
B. Main-sequence stars of identical mass but different metallicity having slightly different luminosities and surface temperatures.
Homework Answers
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The thickness of the main sequence in the H-R diagram is due to - Answer -> A.) The luminosities and surface temperatures of main-sequence stars changing slightly as they convert hydrogen to helium in their cores. Reason being as star ages, it's luminosity increase and so does have changing position on the HR diagram. This effect results in a broadening of the main sequence band because stars start becoming bigger giant and observed randomly throughout their lifetime.
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