Variable Star Candidates in an ACS Field of M31
arXiv:astro-ph/0502294 · doi:10.1086/429735
Abstract
A search for variable stars is performed using two epochs of Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging data for a 9.28 square arcminute portion of M31. This data set reveals 254 sources that vary by at least 4-sigma between epochs. The positions and 2-epoch B-band (equivalent) photometry of these sources are presented. The photometry suggests that this catalog includes most of the RR Lyrae population of this portion of M31.
22 pages, 3 tables, 5 figures, accepted for publication in AJ