Clark, J. S. and Negueruela, I.
(2002).
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| DOI (Digital Object Identifier) Link: | https://doi.org/10.1051/0004-6361:20021623 |
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| Google Scholar: | Look up in Google Scholar |
Abstract
We report the discovery of a hitherto undetected population of Wolf-Rayet stars in the young galactic open cluster Westerlund 1. Optical spectroscopy of the cluster identified 11 such objects; provisional classification suggests that 6 are nitrogen rich (WN) and 5 carbon rich (WC). Including the previously identified Blue, Yellow & Red Super- & Hypergiants, Westerlund 1 clearly has a very rich population of massive post-Main Sequence objects. To date, the post-MS population of Westerlund 1 is significantly larger than that of any other galactic young open cluster - with the possible exception of the Arches - implying that it is potentially amongst the most massive young clusters yet identified in the Local Group.
| Item Type: | Journal Item |
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| Copyright Holders: | 2002 ESO |
| ISSN: | 1432-0746 |
| Keywords: | stellar evolution; Wolf Rayet; galaxies; starburst galaxies |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 13312 |
| Depositing User: | Astrid Peterkin |
| Date Deposited: | 19 Feb 2009 12:15 |
| Last Modified: | 03 Sep 2017 02:11 |
| URI: | http://oro.open.ac.uk/id/eprint/13312 |
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