contact binary

(redirected from Common envelope binary)

contact binary

See binary star; equipotential surfaces.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

contact binary

[′kän‚takt ′bī‚ner·ē]
(astronomy)
A binary system at least one of whose components fills its Roche lobe and in which mass exchange is taking place.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.