## mass functionThe mass function is a numerical relation between the masses of the two components of a spectroscopic binary that provides information on the relative masses of the two stars when the spectral lines of only one component can be seen. If M_{p} is the mass of primary (whose spectrum
is known), M_{s} is the mass of secondary, and i is
the inclination of the orbit, the mass function is given by (M_{s}^{3} sin^{3}i) / (M_{p} + M_{s})^{2}. ## Related categories• ASTRONOMICAL QUANTITIES• STELLAR ASTROPHYSICS | |||||

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