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How can you estimate mass of star?

  1. Oct 16, 2009 #1
    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
     
  2. jcsd
  3. Oct 16, 2009 #2

    mgb_phys

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    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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