Lazaro, C; Arellano Ferro, A; Arevalo, M. J; Bramich, D. M; Giridhar, S; Poretti, E
(Wiley-Blackwell, 2006-10)
We report the results of CCD V and R photometry of the RR Lyrae stars in M2. The periodicities of most variables are revised and new ephemerides are calculated. Light curve decomposition of the RR Lyrae stars was carried ...