Observations and Simulations of the Blue Straggler Star Radial Distribution: Clues on the Formation Mechanisms

Astronomy and Astrophysics – Astronomy

Scientific paper

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Globular Clusters: General, Stars: Evolution, Binaries: General, Blue Stragglers

Scientific paper

By means of high-resolution and wide-field observations in the UV and optical bands we have derived the radial distribution of the Blue Stragglers Star (BSS) population in a number of galactic globular clusters. Monte-Carlo dynamical simulations have then been used to interpret the observed radial distributions in terms of percentage of collisional and mass-transfer BSS populating each cluster. I will present the main results thus obtained and an overall cluster to cluster comparison for the whole sample collected so far, mainly focusing on the clues that such an approach provides about the BSS formation mechanisms.

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