Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...148l...1p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 148, no. 1, July 1985, p. L1-L4.
Astronomy and Astrophysics
Astrophysics
63
Eclipsing Binary Stars, Radiation Pressure, Stellar Atmospheres, Stellar Models, Stellar Winds, Wolf-Rayet Stars, Photosphere, Stellar Mass Ejection, Stellar Temperature
Scientific paper
Using the stellar parameters of the WN5 component of the eclipsing binary V 444 Cygni determined by Cherepashchuk et al. (1984) from multi-color light curves, and employing an improved theory of radiatively-driven stellar winds, models have been calculated which yield an extended, supersonically expanding photosphere, with values close to those observed for the photospheric radius, the mass-loss rate and the terminal velocity. The radial distributions of velocity and density are also in close agreement with those obtained by Cherepashchuk et al. This is regarded as strong evidence that the basic observational features of WR-stars can be reproduced by radiatively-driven wind theory if some previous simplifications in the theory are dropped and correctly determined stellar parameters are used.
Hummer David G.
Kudritzki Rolf Peter
Pauldrach Adi
Puls Jason
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