He I and He II emission line profiles in a Wolf-Rayet cloudy atmosphere model

Details He I and He II emission line profiles in a Wolf-Rayet cloudy atmosphere model He I and He II emission line profiles in a Wolf-Rayet cloudy atmosphere model

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69..516a&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 69, no. 3, May-June 1992, p. 516-525. In Russian.

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Emission Spectra, Helium, Stellar Atmospheres, Stellar Models, Wolf-Rayet Stars, Computational Astrophysics, Stellar Spectra, Stellar Winds

Scientific paper

The results of He I and He II emission line profile calculations are presented for a model of a Wolf-Rayet atmosphere consisting of many dense clouds and somewhat rarefied intercloud medium. The He I 5876 A and He II 5411 A lines of the WN6 star HD 191765 were used for comparison with observations. With the presented model, it is possible to explain satisfactorily the observed line profiles. The value of mass loss rate is equal to M = 2 x 10 exp -5 solar mass/yr. Assuming asymmetry of individual clouds, it is possible to explain the observed central depression of He I lines in some WR stars without the hypothesis of global asymmetry of WR wind.

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