Further Wolf-Rayet stars in the starburst cluster Westerlund 1

2005/03/21 by I. Negueruela, Ignacio Negueruela, J. Simon Clark +1 · 4 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:20052699

published as Astron.Astrophys. 436 (2005) 541 · Accepted for publication in Astronomy & Astrophysics. Eight pages, six figures. Replaced with final version, some minor changes

arxiv created 2005/03/21 · openalex publication_date 2005/05/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

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.

Cited by

• Diffuse, Nonthermal X‐Ray Emission from the Galactic Star Cluster Westerlund 1
• A census of the Wolf-Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy
• Diffuse thermal X-ray emission in the core of the young massive cluster Westerlund 1
• The circumstellar environment and evolutionary state of the supergiant B[e] star Wd1-9

Related

• The very rich massive post-main-sequence star population of the open cluster Westerlund 1
• EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1
• The Discovery of Three Galactic Wolf-Rayet Stars
• Westerlund 1 and its Galactic siblings -Observation confronts Theory
• Radio observations of the massive stellar cluster Westerlund 1