Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241.1055r&link_type=abstract
Astrophysical Journal, Part 1, vol. 241, Nov. 1, 1980, p. 1055-1069.
Astronomy and Astrophysics
Astrophysics
19
Hot Stars, Line Shape, Stellar Mass Ejection, Stellar Winds, Ultraviolet Spectra, Wolf-Rayet Stars, Emission Spectra, Oao 3, Satellite Observation, Stellar Models, Velocity Distribution
Scientific paper
A model having a spherically symmetric velocity distribution with a higher density at the equatorial region was developed to simulate the UV spectrum of the Wolf-Rayet star HD 50896. The spectrum showed P Cygni-shaped profiles whose emissions are stronger than expected in a spherically symmetric stellar wind. The model was studied varying the inclination angle of the star-wind system and the polar to equatorial density ratios; it was shown that HD 50896 could possess a nonspherically symmetric wind and that its symmetry axis is inclined between 60 and 90 deg. It is possible that the velocity distribution of the wind could include an inner constant velocity plateau beyond which the wind accelerates to its terminal velocity as indicated by infrared continuum investigations.
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