Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976azh....53..327k&link_type=abstract
Astronomicheskii Zhurnal, vol. 53, Mar.-Apr. 1976, p. 327-337. In Russian.
Astronomy and Astrophysics
Astronomy
4
Eclipsing Binary Stars, Emission Spectra, Hot Stars, Spectral Line Width, Stellar Envelopes, Stellar Spectra, Wolf-Rayet Stars, Attenuation Coefficients, Computer Techniques, Fortran, Integral Equations, Nonlinear Equations, Stellar Atmospheres, Stellar Structure, Velocity Distribution
Scientific paper
A method for interpreting eclipses in emission-line frequencies in binary systems containing Wolf-Rayet (WR) stars is proposed which takes into account the anisotropy of the coefficient of selective absorption in the WR shell. It is noted that this method can be used to study the spatial structure of a WR shell, including its outermost parts. The distribution of the bulk coefficient of selective absorption in a WR shell is determined from observations of He II, C II-C IV, and N III emission-line intensities in the V444 Cyg and CV Ser systems with a fixed velocity field. Cases of accelerated, steady, and decelerated outflow are examined. A relation is derived which gives the population of the 3D level for the He II ion in the inner parts of the WR shell that are not perturbed by the companion star.
Cherepashchuk Anatol M.
Khaliullin Kh. F.
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