Optical Variable Stars

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Optical Variable Stars

 

variable stars whose brightness varies owing to changing conditions of visibility. Optical variables include eclipsing variables, which are binary stars whose components periodically eclipse each other in their motion about a common center of gravity.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.