1. The only information that can be determined about the masses
m 1 and
m 2 of the two components of a
spectroscopic binary when the spectral lines of only one component (of mass
m 1) can be observed. It is equal to
(m 2 3 sin3 i )/(m 1 + m 2 )2
where
m 1 and
m 2 are measured in solar masses and
i is the inclination of the orbit.