The rotation of Wolf-Rayet stars and the ellipticity of the nebulae surrounding them

Details The rotation of Wolf-Rayet stars and the ellipticity of the nebulae surrounding them The rotation of Wolf-Rayet stars and the ellipticity of the nebulae surrounding them

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sval....3..217a&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 3, Sept. 1977, p. 405-409.) Soviet Astronomy Letters, vol. 3, Sept.-Oct. 1977, p. 217-2

Astronomy and Astrophysics

Astronomy

Giant Stars, Hot Stars, Planetary Nebulae, Stellar Mass Ejection, Stellar Rotation, Wolf-Rayet Stars, Angular Velocity, Critical Velocity, Ellipticity, Stellar Envelopes, Stellar Models, Stellar Spectra

Scientific paper

The suggestion that the observed ellipticity of nebulae surrounding some WR stars results from the difference in mass outflow from the stellar poles and equator (caused by stellar rotation) is analyzed. Two models are considered: (1) stellar rotation with critical velocity and formation of the nebula from interstellar matter by a stellar wind; slow rotation of a giant star and ejection of a shell into interstellar space.

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