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- W_Virginis abstract "W Virginis is the prototype W Virginis variable, a subclass of the Cepheid variable stars. It is located in the constellation Virgo, and varies between magnitudes 9.46 and 10.75 over a period of approximately 17 days.There are variations in the light curve apparently due to multiple pulsation periods rather than inherent instabilities in the pulsation. The dominant pulsation mode has a period of 17.27134 days with a period decrease detected over a 75-year period.The pulsations cause changes in both temperature and size, leading to large changes in the luminosity and brightness. The maximum temperature occurs when the star is at its brightest visually, when the star is also at its smallest. The minimum temperature and maximum radius occur at around phase 0.5 when the brightness is decreasing and nearly at minimum. Because relatively more infrared radiation is produced when the star is cooler, the maximum brightness in the infrared occurs when the visual brightness is already decreasing, and the maximum bolometric luminosity occurs at around phase 0.25 around halfway from maximum to minimum visual brightness.W Virginis stars are old helium shell burning stars with masses less than the sun. They have supergiant spectral luminosity classes despite their modest masses and actual luminosities, because they are highly inflated evolved stars with very low surface gravities. W Virginis itself is typical, with a mass less than half the sun, pulsating between 20 and 50 times the sun's radius, and a luminosity that varies from less than a hundred L☉ to nearly a thousand L☉.".
- W_Virginis wikiPageID "36328556".
- W_Virginis wikiPageLength "6456".
- W_Virginis wikiPageOutDegree "18".
- W_Virginis wikiPageRevisionID "681191127".
- W_Virginis wikiPageWikiLink Category:Durchmusterung_objects.
- W_Virginis wikiPageWikiLink Category:F-type_supergiants.
- W_Virginis wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- W_Virginis wikiPageWikiLink Category:Hipparcos_objects.
- W_Virginis wikiPageWikiLink Category:Objects_named_with_variable_star_designations.
- W_Virginis wikiPageWikiLink Category:Virgo_(constellation).
- W_Virginis wikiPageWikiLink Category:W_Virginis_variables.
- W_Virginis wikiPageWikiLink Cepheid_variable.
- W_Virginis wikiPageWikiLink Durchmusterung.
- W_Virginis wikiPageWikiLink Henry_Draper_Catalogue.
- W_Virginis wikiPageWikiLink Hipparcos.
- W_Virginis wikiPageWikiLink Infrared.
- W_Virginis wikiPageWikiLink Luminosity.
- W_Virginis wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- W_Virginis wikiPageWikiLink Virgo_(constellation).
- W_Virginis wikiPageWikiLink W_Virginis_variable.
- W_Virginis wikiPageWikiLinkText "W Virginis".
- W_Virginis absmagV "−3.0".
- W_Virginis appmagV "9.46".
- W_Virginis bV "+0.40".
- W_Virginis class "F0Ib-G0Ib".
- W_Virginis constell Virgo_(constellation).
- W_Virginis epoch "J2000".
- W_Virginis gravity "0".
- W_Virginis luminosity "851".
- W_Virginis mass "0.4".
- W_Virginis metal "−1.0".
- W_Virginis pError "1.18".
- W_Virginis parallax "−3.32".
- W_Virginis propMoDec "2.73".
- W_Virginis propMoRa "−3.73 ± 1.25".
- W_Virginis radialV "−65.5".
- W_Virginis radius "35".
- W_Virginis simbad "W+Vir".
- W_Virginis temperature "4300".
- W_Virginis variable W_Virginis_variable.
- W_Virginis wikiPageUsesTemplate Template:DEC.
- W_Virginis wikiPageUsesTemplate Template:RA.
- W_Virginis wikiPageUsesTemplate Template:Reflist.
- W_Virginis wikiPageUsesTemplate Template:Solar_luminosity.
- W_Virginis wikiPageUsesTemplate Template:Starbox_astrometry.
- W_Virginis wikiPageUsesTemplate Template:Starbox_begin.
- W_Virginis wikiPageUsesTemplate Template:Starbox_catalog.
- W_Virginis wikiPageUsesTemplate Template:Starbox_character.
- W_Virginis wikiPageUsesTemplate Template:Starbox_detail.
- W_Virginis wikiPageUsesTemplate Template:Starbox_end.
- W_Virginis wikiPageUsesTemplate Template:Starbox_observe.
- W_Virginis wikiPageUsesTemplate Template:Starbox_reference.
- W_Virginis wikiPageUsesTemplate Template:Stars_of_Virgo.
- W_Virginis subject Category:Durchmusterung_objects.
- W_Virginis subject Category:F-type_supergiants.
- W_Virginis subject Category:Henry_Draper_Catalogue_objects.
- W_Virginis subject Category:Hipparcos_objects.
- W_Virginis subject Category:Objects_named_with_variable_star_designations.
- W_Virginis subject Category:Virgo_(constellation).
- W_Virginis subject Category:W_Virginis_variables.
- W_Virginis hypernym Variable.
- W_Virginis type CelestialBody.
- W_Virginis type Place.
- W_Virginis type Star.
- W_Virginis type Location.
- W_Virginis type Place.
- W_Virginis type Thing.
- W_Virginis comment "W Virginis is the prototype W Virginis variable, a subclass of the Cepheid variable stars. It is located in the constellation Virgo, and varies between magnitudes 9.46 and 10.75 over a period of approximately 17 days.There are variations in the light curve apparently due to multiple pulsation periods rather than inherent instabilities in the pulsation.".
- W_Virginis label "W Virginis".
- W_Virginis sameAs Q18376509.
- W_Virginis sameAs m.0120w9rv.
- W_Virginis sameAs W_Діви.
- W_Virginis sameAs Q18376509.
- W_Virginis wasDerivedFrom W_Virginis?oldid=681191127.
- W_Virginis isPrimaryTopicOf W_Virginis.
- W_Virginis name "W Virginis".