Astrophysics (Index)About

mass-luminosity relation

(model relating stellar mass and luminosity)

The mass-luminosity relation is an equation relating a star's mass with its luminosity.

 L         M
————— = ( ————— )a
 LSun      MSun

­a = 3.5 is often used for main sequence stars. Stars close to the Eddington luminosity have a close to 1. a depends upon whether the star is the right size for significant convection.

Eclipsing binaries and parallax measurements help confirm the relation.

Further reading:

Referenced by pages:
initial mass function (IMF)
mass-radius relation
stellar radius determination