Clark, J. S. and Negueruela, I.
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|DOI (Digital Object Identifier) Link:||http://doi.org/10.1051/0004-6361:20021623|
|Google Scholar:||Look up in Google Scholar|
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 Article|
|Copyright Holders:||2002 ESO|
|Keywords:||stellar evolution; Wolf Rayet; galaxies; starburst galaxies|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Astrid Peterkin|
|Date Deposited:||19 Feb 2009 12:15|
|Last Modified:||23 Feb 2016 21:16|
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