Variable Stars in the Archival HST Data of Globular Clusters M13, M30 and NGC 6712

Details Variable Stars in the Archival HST Data of Globular Clusters M13, M30 and NGC 6712 Variable Stars in the Archival HST Data of Globular Clusters M13, M30 and NGC 6712

2004-03-31

arxiv.org/abs/astro-ph/0403716v1

Astronomy and Astrophysics

Astrophysics

17 pages, 9 figures, accepted for publication in Acta Astronomica

Scientific paper

We have analyzed archival HST/WFPC2 time-series data of the central parts of globular clusters M13, M30 and NGC 6712 in search of variable objects. Among a total of 21 identified variables there are 15 new discoveries. The sample includes nine RR Lyr stars, two SX Phe stars and seven W UMa-type contact binaries. One object is preliminarily classified as a detached eclipsing binary and another as an ellipsoidal variable.

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