BVIPhotometric Variability Survey of M3

We have conducted a three band (BVI) variability survey of the globularcluster M3. This is the first three band survey of the cluster using modernimage subtraction techniques. Observations were made over 9 nights in 1998 onthe 1.2m telescope at the F.L. Whipple Observatory in Arizona. We presentphotometry for 180 variable stars in the M3 field, of which 12 are newlydiscovered. New discoveries include six SX Phe type variables which all lie inthe blue straggler region of the color magnitude diagram, two new firstovertone RR Lyrae, a candidate multi-mode RR Lyrae, a detached eclipsingbinary, and two unclassified variables. We also provide revised periods for 52of the 168 previously known variables that we observe. The catalog andphotometry for the variable stars are available via anonymous ftp atftp://cfa-ftp.harvard.edu/pub/kstanek/M3/