Galactic distribution of WR stars

Details Galactic distribution of WR stars Galactic distribution of WR stars

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ap%26ss.281..199v&link_type=abstract

Astrophysics and Space Science, v. 281, Issue 1, p. 199-202 (2002).

Statistics

3

Galaxy: Structure, Stars: Distances, Stars: Evolution, Stars: Statistics, Stars: Wolf-Rayet

Scientific paper

The recent VIIth Catalogue of Galactic Wolf-Rayet Stars lists 227 Population I WR stars, comprising 127 WN, 87 WC, 10 WN/WC and 3 WO stars. Additional discoveries bring the census to 234 WR stars. A re-determination of the optical photometric distances and the galactic distribution of WR stars shows in the solar neighbourhood a projected surface density of 2.7 WR stars per kpc2, a N WC/N WN number ratio of 1.3, and a WR binary frequency of 40 %.The galactocentric distance (R WR) distribution per subtype showsR WN and R WC decreasing with WN and WC subtypes.

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