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

• Autorzy: Poleski, R. , Soszyński, I. , Udalski, A. , Szymański, M. K. , Kubiak, M. , Pietrzyński, G. , Wyrzykowski, Ł. , Ulaczyk, K.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

catalogs; binaries: close; Magellanic Clouds

• Czasopismo: Acta Astronomica
• Rocznik: 2010
• Tom: Vol. 60, No. 3
• Strony: 179--196
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Poleski, R.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

autor

Soszyński, I.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

autor

Udalski, A.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

autor

Szymański, M. K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

autor

Kubiak, M.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

autor

Pietrzyński, G.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,
• Universidad de Concepción, Departamento de Fisica, Casilla 160-C, Concepción, Chile

autor

Wyrzykowski, Ł.

• Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK ,

autor

Ulaczyk, K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland ,

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