UV observations of the globular cluster M10 from HST and GALEX. The BSS population

Abstract

We present a combination of high-resolution Hubble Space Telescope and wide-field ground-based and Galaxy Evolution Explorer data of the Galactic Globular Cluster M10 (NGC6254). By using this large data-set we determined the center of gravity of the cluster and we built its density profile from star counts over its entire radial extension. We find that the density profile is well reproduced by a single-mass King model with structural parameters c=1.41 and r_c=41". We also studied the Blue Straggler Star population and its radial distribution. We count a total number of 120 BSS within the tidal radius. Their radial distribution is bimodal: highly peaked in the cluster center, decreasing at intermediate distances and rising again outwards. We discuss these results in the context of the dynamical clock scheme presented by Ferraro et al. (2012) and of recent results about the radial distribution of binary systems in this cluster.

Accepted for publication by ApJ; 26 pages, 11 figures, 1 table

References in corpus (7)

• Dynamical age differences among coeval star clusters as revealed by blue stragglers
• Discovery of Carbon/Oxygen depleted Blue Straggler Stars in 47 Tucanae: the chemical signature of a mass-transfer formation process
• The radial distribution of blue straggler stars and the nature of their progenitors
• Another Non-segregated Blue Straggler Population in a Globular Cluster: the Case of NGC 2419
• Blue Straggler Stars in the Unusual Globular Cluster NGC 6388
• A Panchromatic Study of the Globular Cluster NGC 1904. I: The Blue Straggler Population
• The Blue Straggler Population of the Globular Cluster M5

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