Further Wolf-Rayet stars in the starburst cluster Westerlund 1
Abstract
We present new low and intermediate-resolution spectroscopic
observations of the Wolf Rayet (WR) star population in the massive starburst cluster Westerlund 1. Finding charts are presented for five new WRs - four WNL and one WCL - raising the current total of known WRs in the cluster to 19. We also present new spectra and correct identifications for the majority of the 14 WR stars previously known, notably confirming the presence of two WNVL stars. Finally we briefly discuss the massive star population of Westerlund 1 in comparison to other massive young galactic clusters.- Publication:
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Astronomy and Astrophysics
- Pub Date:
- June 2005
- DOI:
- 10.1051/0004-6361:20052699
- arXiv:
- arXiv:astro-ph/0503303
- Bibcode:
- 2005A&A...436..541N
- Keywords:
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- stars: Wolf-Rayet;
- stars: evolution;
- stars: general;
- open clusters and associations: individual: Westerlund 1;
- Astrophysics
- E-Print:
- Accepted for publication in Astronomy &