You Want to Find a Mass of a Star on the Main

question 181

Multiple Choice

You want to find a mass of a star on the main sequence of the H-R diagram. What do you need

• A)The star has to be in a visual binary.
• B)The star has to be in a spectroscopic binary.
• C)You need the star's luminosity.
• D)You need the star's absorption spectra.

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