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- BL_Herculis_variable abstract "BL Herculis variables are a type of variable star with low luminosity and mass that have a period of less than eight days. They are pulsating stars making up a subclass of Type II Cepheids with light curves that frequently show a bump on the descending side for stars of the shortest periods and on the ascending side for longer period stars. Like other Type II Cepheids, they are very old population II stars found in the galaxy’s halo and globular clusters. Also, compared to other Type II Cepheids, BL Her variables have shorter periods and are fainter than W Virginis variables. Pulsating stars vary in spectral class as they vary in brightness and BL Her variables are normally class A at brightest and class F when most dim. When plotted on the Hertzsprung–Russell diagram they fall in-between W Vir and RR Lyrae variables.The prototype star, BL Her, varies between magnitude 9.7 and 10.6 in a period of 1.3 days. The brightest BL Her variables are: VY Pyx (7.7 mag max), V0553 Cen (8.2), SW Tau (9.3), RT TrA (9.4), V0351 Cep (9.5), BL Her (9.7), BD Cas (10.8), and UY Eri (10.9).".
- BL_Herculis_variable wikiPageExternalLink BL_Her.html.
- BL_Herculis_variable wikiPageID "39541688".
- BL_Herculis_variable wikiPageRevisionID "600895432".
- BL_Herculis_variable subject Category:Astrometry.
- BL_Herculis_variable subject Category:Cepheid_variables.
- BL_Herculis_variable subject Category:Standard_candles.
- BL_Herculis_variable subject Category:Variable_stars.
- BL_Herculis_variable type CelestialBody.
- BL_Herculis_variable type Star.
- BL_Herculis_variable type PhysicalBody.
- BL_Herculis_variable comment "BL Herculis variables are a type of variable star with low luminosity and mass that have a period of less than eight days. They are pulsating stars making up a subclass of Type II Cepheids with light curves that frequently show a bump on the descending side for stars of the shortest periods and on the ascending side for longer period stars. Like other Type II Cepheids, they are very old population II stars found in the galaxy’s halo and globular clusters.".
- BL_Herculis_variable label "BL Herculis variable".
- BL_Herculis_variable label "Variabile BL Herculis".
- BL_Herculis_variable sameAs Variabile_BL_Herculis.
- BL_Herculis_variable sameAs m.0vsgdbd.
- BL_Herculis_variable sameAs Q14557003.
- BL_Herculis_variable sameAs Q14557003.
- BL_Herculis_variable wasDerivedFrom BL_Herculis_variable?oldid=600895432.
- BL_Herculis_variable isPrimaryTopicOf BL_Herculis_variable.