BVI Photometric Variability Survey of M3

Details BVI Photometric Variability Survey of M3 BVI Photometric Variability Survey of M3

2004-10-12

arxiv.org/abs/astro-ph/0410314v2

Astron.J. 129 (2005) 1596

Astronomy and Astrophysics

Astrophysics

35 pages, 11 figures. Movies associated with this paper at http://www-cfa.harvard.edu/~jhartman/M3_movies.html Accepted for pu

Scientific paper

10.1086/427252

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

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