Rotation of Wolf-Rayet stars and ellipticity of their surrounding nebulae

Details Rotation of Wolf-Rayet stars and ellipticity of their surrounding nebulae Rotation of Wolf-Rayet stars and ellipticity of their surrounding nebulae

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pazh....3..405a&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal, vol. 3, Sept. 1977, p. 405-409. In Russian.

Astronomy and Astrophysics

Astronomy

2

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

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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