What Would Be the Most Reliable Way to Measure the Mass

question 33

Multiple Choice

What would be the most reliable way to measure the mass of a star for which the distance is unknown?

• A) apply the mass-temperature relation
• B) measure its orbit around another star
• C) measure its radius, then compute its volume and multiply by density to get the mass
• D) compute its spectroscopic parallax, then apply the mass-luminosity relation

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