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,[1] and are of spectral class F6 – K2.[2][3]
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.[4]
^Wallerstein, G., "The Cepheids of Population II and Related Stars", Publications of the Astronomical Society of the Pacific, 114 p.689–699 (2002)
^W. Strohmeier, Variable Stars, Pergamon (1972)
^Soszyński, I.; Udalski, A.; Szymański, M. K.; Kubiak, M.; Pietrzyński, G.; Wyrzykowski, Ł.; Szewczyk, O.; Ulaczyk, K.; Poleski, R. "The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. II.Type II Cepheids and Anomalous Cepheids in the Large Magellanic Cloud", Acta A., vol 58 (2008)
^Webb, Stephen, Measuring the Universe: The Cosmological Distance Ladder, Springer, (1999)
and 28 Related for: W Virginis variable information
Springer, (1999) AAVSO Variable Star of the Month. WVirginis: Spring 2003 PDF / HTML OGLE Atlas of Variable Star Light Curves - WVirginis stars v t e...
WVirginis is the prototype WVirginisvariable, a subclass of the Cepheid variable stars. It is located in the constellation Virgo, and varies between...
is a variable star in the constellation Pavo. It is the brightest WVirginisvariable in the sky. In 1901, κ Pavonis was reported to be a variable star...
stars in the night sky. It has the Bayer designation α Virginis, which is Latinised to Alpha Virginis and abbreviated Alpha Vir or α Vir. Analysis of its...
32 Virginis, also known as FM Virginis, is a star located about 250 light years from the Earth, in the constellation Virgo. Its apparent magnitude ranges...
Delta Virginis (δ Virginis, abbreviated Del Vir, δ Vir), formally named Minelauva /ˌmɪnəˈlɔːvə/, is a star in the zodiac constellation of Virgo. With an...
also receive a supergiant luminosity class, most notably WVirginisvariables such as WVirginis itself, stars that are executing a blue loop triggered...
between 1 and 4 days are of the BL Her subclass, 10–20 days belong to the WVirginis subclass, and stars with periods greater than 20 days belong to the RV...
61 Virginis (abbreviated 61 Vir) is the Flamsteed designation of a G-type main-sequence star (G7V) slightly less massive than the Sun (which has a hotter...
to other type II Cepheids, BL Herculis variables have shorter periods and are fainter than WVirginisvariables. Pulsating stars vary in spectral class...
RV Tauri and semiregular variables) to the near absence of repetitiveness in the irregular variables. The WVirginisvariables are at the interface; the...
AG Virginis is an eclipsing binary star system in the equatorial constellation of Virgo. With a maximum apparent visual magnitude of 8.51 it is too faint...
type variable. The luminosity of RV Tau variables is typically a few thousand times the sun, which places them at the upper end of the WVirginis instability...
Gamma Virginis (γ Virginis, abbreviated Gamma Vir, γ Vir), officially named Porrima /ˈpɒrɪmə/, is a binary star system in the constellation of Virgo. It...
FG Virginis is a well-studied variable star in the equatorial constellation of Virgo. It is a dim star, near the lower limit of visibility to the naked...
less; WVirginisvariables, more-luminous pulsating variables also known as type II Cepheids, with periods of 10–20 days; Type I Cepheid variables, more...
AH Virginis is a contact binary star system in the equatorial constellation of Virgo, abbreviated AH Vir. It is a variable star with a brightness that...
population II stars with low masses, including WVirginisvariables, BL Herculis variables and RV Tauri variables. The Classical Cepheids are more luminous...
Table 1. Cox, Arthur N. (1 March 2003). "A Pulsation Mechanism for GW VirginisVariables". The Astrophysical Journal. 585 (2): 975–982. Bibcode:2003ApJ...585...
Archived from the original on 2012-02-27. Retrieved 2010-07-16. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014....
BH Virginis is a binary star system in the equatorial constellation of Virgo. With a typical apparent visual magnitude of 9.6, it is too faint to be visible...
NGC 5128 and NGC 4258. Historically Type II Cepheids were called WVirginisvariables, but are now divided into three subclasses based on the length of...
(historically termed WVirginis stars) have extremely regular light pulsations and a luminosity relation much like the δ Cephei variables, so initially they...
RT Virginis is a variable star in the equatorial constellation of Virgo, abbreviated RT Vir. It ranges in brightness from an apparent visual magnitude...
cross the instability strip during a blue loop are thought to become WVirginisvariables. More massive stars, crossing the instability strip during a blue...
Mira variables /ˈmaɪrə/ (named for the prototype star Mira) are a class of pulsating stars characterized by very red colours, pulsation periods longer...
a few days. The shortest known period is 0.1167 days (~2:48 hours, HW Virginis); the longest is 9892 days (27 years, Epsilon Aurigae). Over long periods...
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