Issue |
A&A
Volume 503, Number 2, August IV 2009
|
|
---|---|---|
Page(s) | 651 - 662 | |
Section | Catalogs and data | |
DOI | https://doi.org/10.1051/0004-6361/200912142 | |
Published online | 02 July 2009 |
Deep census of variable stars in a VLT/VIMOS field in Carina *,**
1
Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña MacKenna 4860, Casilla 306, Santiago 22, Chile e-mail: pietruk@astro.puc.cl
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
Received:
24
March
2009
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
© ESO, 2009
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