EDP Sciences
Free access
Issue
A&A
Volume 436, Number 2, June III 2005
Page(s) 541 - 547
Section Galactic structure, stellar clusters and populations
DOI http://dx.doi.org/10.1051/0004-6361:20052699


A&A 436, 541-547 (2005)
DOI: 10.1051/0004-6361:20052699

Research Note

Further Wolf-Rayet stars in the starburst cluster Westerlund 1

I. Negueruela1 and J. S. Clark2, 3

1  Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante, Apdo. 99, E03080 Alicante, Spain
    e-mail: ignacio@dfists.ua.es
2  Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
3  Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK

(Received 13 January 2005 / Accepted 14 March 2005)

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.


Key words: stars: Wolf-Rayet -- stars: evolution -- stars: general -- open clusters and associations: individual: Westerlund 1

SIMBAD Objects



© ESO 2005

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.