W Virginis variable

Lightcurve of the W Virginis (Type II Cepheid) variable κ Pavonis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS).

W Virginis variables are a subclass of Type II Cepheids which exhibit pulsation periods between 10–20 days,<ref name=wallerstein2002>Template:Cite journal</ref> and are of spectral class F6 – K2.<ref name="strohmeier1972">Template:Cite book</ref><ref name=so08>Template:Cite journal</ref>

They were first recognized as being distinct from classical Cepheids by Walter Baade in 1942, in a study of Cepheids in the Andromeda Galaxy that proposed that stars in that galaxy were of two populations.<ref name="webb1999">Template:Cite book</ref> The prototype is W Virginis.<ref name="wallerstein2002" />

See also

• Low-dimensional chaos in stellar pulsations

External links

• AAVSO Variable Star of the Month. W Virginis: Spring 2003 PDF / HTML
• OGLE Atlas of Variable Star Light Curves - W Virginis stars

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