We have searched for variable stars in deep V-band images of a field towards the Galactic plane in Carina. The images were taken with VIMOS instrument at ESO VLT during 4 contiguous nights in April 2005. We detected 348 variables among 50897 stars in the magnitude range between V=15.4 and V=24.5 mag. Upon detection, we classified the variables by direct eye inspection of their light curves. All variable objects but 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 delta 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. Our result give some implications for future large variability surveys.
@article{arxiv.0905.4275,
title = {Deep census of variable stars in a VLT/VIMOS field in Carina},
author = {P. Pietrukowicz and D. Minniti and J. M. Fernandez and G. Pietrzynski and M. T. Ruiz and W. Gieren and R. F. Diaz and M. Zoccali and M. Hempel},
journal= {arXiv preprint arXiv:0905.4275},
year = {2015}
}
Comments
14 pages, 16 figures, accepted for publication in A&A