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W Virginis variables are a subclass of Type II Cepheids which exhibit pulsation periods between 10–20 days, and are of spectral class F6 – K2.
They were first recognized as being distinct from classical Cepheids by Walter Baade in 1942, in a study of Cepheids in the
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W Virginis variables are a subclass of Type II Cepheids which exhibit pulsation periods between 10–20 days, and are of spectral class F6 – K2.
They were first recognized as being distinct from classical Cepheids by Walter Baade in 1942, in a study of Cepheids in the Andromeda Galaxy
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromeda has a Galaxy#Isophotal diameter, D25 isop ...
that proposed that stars in that galaxy were of two populations.
See also
* Low-dimensional chaos in stellar pulsationsReferences
External links
* AAVSO Variable Star of the Month. W Virginis: Spring 200HTML
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