The HST/ACS Survey of Galactic Globular Clusters: Variability of the Blue Straggler Stars

Details The HST/ACS Survey of Galactic Globular Clusters: Variability of the Blue Straggler Stars The HST/ACS Survey of Galactic Globular Clusters: Variability of the Blue Straggler Stars

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21110414c&link_type=abstract

American Astronomical Society, AAS Meeting #211, #104.14; Bulletin of the American Astronomical Society, Vol. 39, p.926

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a search for variable blue straggler stars (BSS) in a wide variety of Galactic globular clusters using multi-epoch photometry from the HST ACS Galactic Globular Cluster survey. We present our criteria for selecting variables, as well as light curves of photometrically selected BSS meeting these criteria. In addition, since our clusters span a broad range of physical parameters, we analyze the variability characteristics of the BSS populations in each cluster in the context of cluster properties and discuss implications for BSS formation and cluster dynamics.

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