The nature of single-line population I Wolf-Rayet stars - Evidence for high space velocity

Details The nature of single-line population I Wolf-Rayet stars - Evidence for high space velocity The nature of single-line population I Wolf-Rayet stars - Evidence for high space velocity

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....85..201m&link_type=abstract

Astronomy and Astrophysics, vol. 85, no. 1-2, May 1980, p. 201-207. Research supported by the National Research Council of Cana

Physics

24

Galactic Structure, Hot Stars, Milky Way Galaxy, Star Distribution, Stellar Motions, Wolf-Rayet Stars, Acceleration (Physics), Astronomical Catalogs, Binary Stars, Radial Velocity, Supernovae

Scientific paper

The paper examines the distribution of galactic Wolf-Rayet stars perpendicular to the plane which indicates that the single-line stars are on the average more distant from the plane than the binaries. This is observed independent of the choice of the cut-off in distance or magnitude of the sample. From a limited sample, the mean absolute separation for the binaries is approximately 80 pc, like that for normal population IOB-stars, while for the single-line stars it is approximately 130 pc which is similar to the runaway OB-stars. This indicates that some single-line WR stars were accelerated out of the plane probably after the kick of a supernova explosion of the original primary in a binary system. While the binaries are generally more tightly and symmetrically distributed about the plane, the vast majority of single-line stars beyond 80 pc are located at negative galactic latitudes.

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