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

Published online by Cambridge University Press:  01 September 2007

Barbara Lanzoni
Barbara Lanzoni*
Affiliation:
Dipartimento di Astronomia, Università di Bologna, Via Ranzani 1, 40127 Bologna, Italy email: barbara.lanzoni@bo.astro.it
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Abstract

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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.

Keywords

globular clusters: generalstars: evolutionbinaries: generalblue stragglers
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 326 - 330
Copyright
Copyright © International Astronomical Union 2008

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