Deep census of variable stars in a VLT/VIMOS field in Carina

Pietrukowicz, P; Minniti, D; Fernandez, JM; Pietrzynski G.; RUIZ, MT; Gieren, W.; Diaz, RF; Zoccali, M; Hempel, M

Abstract

Aims. We searched for variable stars in deep V-band images of a field towards the Galactic plane in Carina. Methods. The images were taken with the VIMOS instrument at ESO VLT during 4 contiguous nights in April 2005. We detected 348 variables among 50 897 stars in the magnitude range between V = 15.4and V = 24.5 mag. After detection, we classified the variables by a direct eye inspection of their light curves. Results. All variable objects besides 9 OGLE transits in the field are new discoveries. We provide a complete catalog of all variables, which includes eclipsing/ellipsoidal binaries, miscellaneous pulsators (mostly d Scuti-type variables), stars with flares, and other (irregular and likely long-period) variables. Only two of the stars in our sample are known to host planets. Conclusions. Our result has implications for future large variability surveys. © ESO 2009.

Más información

Título según WOS: Deep census of variable stars in a VLT/VIMOS field in Carina
Título según SCOPUS: Deep census of variable stars in a VLT/VIMOS field in Carina
Título de la Revista: ASTRONOMY & ASTROPHYSICS
Volumen: 503
Número: 2
Editorial: EDP SCIENCES S A
Fecha de publicación: 2009
Página de inicio: 651
Página final: 662
Idioma: English
URL: http://www.aanda.org/10.1051/0004-6361/200912142
DOI:

10.1051/0004-6361/200912142

Notas: ISI, SCOPUS