Blue Straggler Formation in Clusters

Details Blue Straggler Formation in Clusters Blue Straggler Formation in Clusters

2010-09-10

arxiv.org/abs/1009.2033v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

8 pages, 3 figures, to appear in the proceedings of the conference "Binary Star Evolution: Mass Loss, Accretion, and Mergers"

Scientific paper

Blue stragglers are thought to be formed from the merger or coalescence of two stars, but the details of their formation in clusters has been difficult to disentangle. We discuss the two main formation mechanisms for blue stragglers (stellar collisions or mass transfer in a binary system). We then look at the additional complications caused by the stars living in the dynamically active environment of a star cluster. We review the recent observational and theoretical work which addresses the question "which mechanism dominates?" and conclude that the most likely answer is that both mechanisms are at work, although with different importance in different environments and at different times in the cluster lifetime. We finish with a short discussion of some avenues for future work

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