We present initial results from a long-baseline radial velocity survey for massive binaries in the cluster Westerlund 1. Four systems are examined: the dust-producing WC binary W239, the double-lined eclipsing binary W13, and the single-lined B0 supergiants W43a and W3003. Finally, the evolutionary implications for the population of massive stars in Westerlund 1 are discussed.
@article{arxiv.1010.6270,
title = {The massive binary population of the starburst cluster Westerlund 1},
author = {B. W. Ritchie and J. S. Clark and I. Negueruela},
journal= {arXiv preprint arXiv:1010.6270},
year = {2010}
}
Comments
5 pages, 3 figures, to appear in the proceedings of the 39th Liege International Astrophysical Colloquium on "The multi-wavelength view of hot, massive stars", Liege, 12-16 July 2010