How can you estimate mass of star?

Thread starter dsisk559
Start date Oct 16, 2009
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Estimate Mass Star

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The mass of a star can be estimated using its spectral class and absolute magnitude, particularly for main sequence stars, through the relationship L = M^3.5, where L and M are relative to the sun. For stars outside the main sequence, different exponents and more complex relationships apply. Additional information may be required for accurate mass estimation of non-main sequence stars. Understanding these relationships is crucial for astrophysical calculations. Accurate mass estimation aids in the study of stellar evolution and characteristics.

Oct 16, 2009

dsisk559

Is there a way to estimate the mass of a star using Spectral Class and absolute magnitude?

If you can't then what info do I need in order to so.

Thanks,
Dan

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Oct 16, 2009

mgb_phys

Science Advisor

Homework Helper

From the absolute magnitude and the luminosity magnitude relationship you can pretty easily get the mass of a main sequence star.
L = M ^ 3.5 ( with L and M relative to the sun)

For larger or smaller stars there is a different exponent and sometimes slightly more complex relationship.

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