The massive binary population of the starburst cluster Westerlund 1

Ritchie, B. W.; Clark, J. S. and Negueruela, I. (2010). The massive binary population of the starburst cluster Westerlund 1. Bulletin de la Societe Royales des Sciences de Liège, 80 pp. 628–633.

URL: http://www.srsl-ulg.net/

Abstract

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.

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