The helium abundance in the atmospheres of the stars in the clusters NGC 869, 884 and 2264

Details The helium abundance in the atmospheres of the stars in the clusters NGC 869, 884 and 2264 The helium abundance in the atmospheres of the stars in the clusters NGC 869, 884 and 2264

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13...56k&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Jan. 1987, p. 56-62. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

3

Abundance, Atmospheric Composition, B Stars, Helium, Star Clusters, Stellar Atmospheres, Angular Velocity, Spectral Line Width, Spectral Resolution, Stellar Evolution, Stellar Models, Stellar Temperature

Scientific paper

Effective temperature Te, surface gravity lg g, helium abundance ɛ(He) in the atmospheres, rotation velocity V sin i are determined by the model atmosphere method for 23 B stars in the clusters NGC 869, 884, 2264. Analysis of the helium abundance supplemented with the results obtained previously by the authors (1986) for 46 B stars has led to a statistically confident inference of the absence of significant differences in the average helium abundance from cluster to cluster.

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