SIMBAD references

2002A&A...396L..25C - Astronomy and Astrophysics, volume 396, L25-29 (2002/12-4)

A hidden population of Wolf-Rayet stars in the massive galactic cluster Westerlund 1.


Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): stars: evolution - stars: Wolf Rayet - galaxies: starbursts

Nomenclature: Table 1: Cl* Westerlund 1 CN A (Nos A-K).

CDS comments: Objects YHG W NNN and YSG WN = Cl* Westerlund 1 W NNN.

Simbad objects: 40

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