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Blue stragglers as stellar collision products: the angular momentum question

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Author

Summary, in English

We investigate the structure and evolution of blue straggler stars, which were formed from direct stellar collisions between main-sequence stars in globular clusters. In particular, we look at the rotational evolution of the products of off-axis collisions. As found in previous work, such blue stragglers initially have too high an angular momentum to contract down to the main sequence. We consider angular momentum loss through either disc locking or locking to an outflowing wind, and we show that both methods allow the merged object to shed sufficient angular momentum to contract down to the main sequence.

Publishing year

2005

Language

English

Pages

716-725

Publication/Series

Monthly Notices of the Royal Astronomical Society

Volume

358

Issue

3

Document type

Journal article

Publisher

Oxford University Press

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • stars : rotation
  • blue stragglers
  • convection
  • hydrodynamics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1365-2966