Eclipsing binary stars
Astrometric binary stars
Multiple stars
Visual binary stars
Double periodic variable stars
Optical double stars
Wide binary stars
Close binary stars
Companion stars
Detached binary stars
Two stars gravitationally bound to each other, so that they revolve around their common center of gravity.
Interferometric binary stars
Spectroscopic binary stars
Relativistic binary stars
Binary stars
Optical bursts
Sirius
Binaries