Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..99..175h&link_type=abstract
(International Astronomical Union, Colloquium on Double Stars, Physical Properties and Generic Relations, 80th, Bandung, Indones
Astronomy and Astrophysics
Astrophysics
27
Binary Stars, Milky Way Galaxy, Star Distribution, Stellar Evolution, Wolf-Rayet Stars, Statistical Distributions, Stellar Mass
Scientific paper
To assess the relative importance of massive binary evolution as one of the ways to produce WR stars, the galactic distribution of WR binaries is compared with that of single WR stars using improved intrinsic parameters and new data for the fainter WR stars. In the galactic plane the increase of the binary frequency with galactocentric distance is confirmed. In a direction perpendicular to the galactic plane, it is demonstrated at all distances from the sun that the single-line spectroscopic WR binaries with small mass functions have definitely larger /z/-distances than the single WR stars and the WR binaries with massive companions. Among the single WR stars the fraction of those with large /z/-distances is increasing with galactocentric distance, like the fraction of the known binaries. The total WR binary frequency in the Galaxy could be well above 50 percent.
Admiranto A. G.
Hidayat Bambang
van der Hucht Karel A.
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