What Is Main- Sequence Fitting

question 115

Multiple Choice

What is main- sequence fitting?

• A)a way of forcing stars to fit into a standard main sequence, even when they have some unusual characteristics
• B)a method for determining the age of a star cluster
• C)a method for determining the distance to a star cluster by assuming that its main sequence should line up with the main sequence on a standard H- R diagram
• D)the way we construct an H- R diagram by plotting the surface temperatures and luminosities of stars

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Definitions:

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