The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. X. Enigmatic Class of Double Periodic Variables in the Large Magellanic Cloud

The tenth part of the OGLE-III Catalog of Variable Stars contains 125 Double Periodic Variables (DPVs) from the Large Magellanic Cloud. DPVs are semi-detached binaries which show additional variability with a period around 33 times longer than the orbital period. The cause of this long cycle is not...

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Autores: Poleski, R.; Pietrzynski, G.
Tipo de documento: Artículo
Estado:Published version
Fecha de publicación:2010
País:Chile
Institución:Agencia Nacional de Investigación y Desarrollo
Repositorio:Articulos_ANID
Lenguaje:Inglés
OAI Identifier:oai:repositorio.anid.cl:10533/237177
Acceso en línea:https://hdl.handle.net/10533/237177
Nivel de acceso:Acceso abierto
Sumario:The tenth part of the OGLE-III Catalog of Variable Stars contains 125 Double Periodic Variables (DPVs) from the Large Magellanic Cloud. DPVs are semi-detached binaries which show additional variability with a period around 33 times longer than the orbital period. The cause of this long cycle is not known and previous studies suggest it involves circumbinary matter. We discuss the properties of the whole sample of the LMC DPVs and put more attention to particularly interesting objects which may be crucial for verifying hypothesis explaining long cycle variability. Secondary eclipses of one of the objects disappear during some orbital cycles and primary eclipses are deeper during long cycle minimum.

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