Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña MacKenna 4860, Casilla 306, Santiago 22, Chile e-mail: firstname.lastname@example.org
2 Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warszawa, Poland
3 Vatican Observatory, Vatican City State 00120, Italy
4 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
5 Departamento de Astronomía, Universidad de Concepción, Casilla 160 C, Concepción, Chile
6 Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
7 Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
8 Instituto de Astronomía y Física del Espacio (CONICET-UBA), Buenos Aires, Argentina
Accepted: 26 May 2009
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 and 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 δ 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.
Key words: stars: variables: general / stars: variables: delta Sct / binaries: eclipsing / stars: flare / planetary systems / stars: statistics
Based on observations collected with the Very Large Telescope at Paranal Observatory (ESO Programme 075.C-0427(A), D.M. and J.M.F. visiting observers).
© ESO, 2009