Definitions for "Spectroscopic binary"
Keywords:  doppler, spectral, shift, binary, star
binary star that can be distinguished from a single star only through analysis of the Doppler shift of the spectral lines of one or both stars as they revolve about their common center of mass.
A binary star in which the two stars are too close to be seen as separate stars, but can be detected through a careful examination of the spectrum. Usually detected through changes in the Doppler shift of spectral lines.
double star whose components are not observed separately in a telescope but whose binary character is revealed by the periodic Doppler shift of spectral lines.