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RR Lyrae Variables in the Globular Clusters of M31: a First Detection of Likely Candidates
G. Clementini, L. Federici, C. E. Corsi +3
The purpose of this paper is to show that RR Lyrae variables exist and can be detected in M31 globular clusters. We report on the first tentative identification of RR Lyrae candida…
A Survey of M31 Globular Clusters using WFPC2 on board HST
R. M. Rich, C. E. Corsi, M. Bellazzini +3
We report new, as yet unpublished HST/WFPC2 V, I photometry of 9 globular clusters in M31. These are part of a total sample of 19 clusters on M31 with well observed CMDs from HST.…
The RR Lyrae variables in M54 and the Sgr dwarf galaxy
Carla Cacciari, Michele Bellazzini, Samantha Colucci
We report on new B, V and I CCD photometry of the globular cluster M54 that was aimed at the study of its variable stars. With respect to the previous most recent work on M54 we ha…