Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Science

double-mode variable

A double-mode variable is pulsating variable star that oscillates in the fundamental mode plus one overtone of this mode. First overtone pulsations are seen in beat Cepheids and some other types. The Blazhko effect, shown by some RR Lyrae stars, may be explainable in terms of a third overtone.

Related entry

   • variable stars

Related category