Wolf-Rayet stars in open clusters and associations

Details Wolf-Rayet stars in open clusters and associations Wolf-Rayet stars in open clusters and associations

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26as...58..163l&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 58, Oct. 1984, p. 163-192.

Astronomy and Astrophysics

Astrophysics

180

B Stars, O Stars, Open Clusters, Stellar Evolution, Wolf-Rayet Stars, Stellar Color, Stellar Magnitude

Scientific paper

Existing data on galactic Wolf-Rayet (WR) stars in open clusters and OB associations have been summarized and evaluated. All WR stars within three cluster radii from known clusters have been studied. It was found that 10 - 30% of all WR stars are cluster members. It is also estimated that at least 50% of the WR stars are members of OB associations (including cluster members). These frequencies are in good agreement with the corresponding figures found for O stars. Mean absolute magnitudes for different groups of WR stars have been determined. There is a good correlation between mass and absolute magnitude for binary WR stars. Implications of this on different evolutionary scenarios for WR stars are briefly discussed. The distributions of WR stars in the solar neighbourhood and in LMC are compared and commented.

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