The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. V. R Coronae Borealis Stars in the Large Magellanic Cloud

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

Abstrakty

EN

The fifth part of the OGLE-III Catalog of Variable Stars presents 23 R CrB (RCB) stars in the Large Magellanic Cloud (LMC). 17 of these objects have been spectroscopically confirmed by previous studies, while 6 stars are new candidates for RCB variables. We publish the VI multi-epoch OGLE photometry for all objects. We use the sample of carbon-rich long-period variables released in the previous part of this catalog to select objects with severe drops in luminosity, i.e., with the DY-Per-like light curves. DY Per stars are often related to R CrB variables. We detect at least 600 candidates for DY Per stars, mostly among dust enshrouded giants. We notice that our candidate DY Per stars form a continuity with other carbon-rich long-period variables, so it seems that DY Per stars do not constitute a separate group of variable stars.

Słowa kluczowe

EN

Stars: AGB; Stars: post-AGB; Stars: carbon; Magellanic Clouds

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2009
• Tom: Vol. 59, No. 4
• Strony: 335--347
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Soszyński I.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

autor

Udalski A.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

autor

Szymański M. K.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

autor

Kubiak M.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

autor

Pietrzyński G.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, 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

Szewczyk O.

• Universidad de Concepción, Departamento de Fisica, Casilla 160--C, Concepción, Chile

autor

Ulaczyk K.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

autor

Poleski R.

• Warsaw University Observatory, Al.Ujazdowskie4, 00-478Warszawa, Poland

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