Synthetic line profiles in early-type stellar winds. I - H and He/+/

Details Synthetic line profiles in early-type stellar winds. I - H and He/+/ Synthetic line profiles in early-type stellar winds. I - H and He/+/

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237..819k&link_type=abstract

Astrophysical Journal, Part 1, vol. 237, May 1, 1980, p. 819-830.

Astronomy and Astrophysics

Astrophysics

13

Atmospheric Models, Early Stars, Line Spectra, Spectral Energy Distribution, Stellar Evolution, Stellar Models, Stellar Winds, Atomic Energy Levels, Emission Spectra, Helium, Hydrogen, O Stars, Radiative Transfer, Stellar Atmospheres, Stellar Mass Ejection

Scientific paper

Statistical equilibrium calculations for the first 10 levels of H and He(+) were carried out for several model atmospheres of a star with an effective temperature of 40,000 deg K and log g equal to 3.5. Atomic level populations and line profiles were computed for a wind model (Klein and Castor, 1978) with a mass-loss rate of about 1.2 x 10 to the -5th solar mass per yr. A comoving frame method was applied and the radiative transfer problem in the expanding atmosphere is treated. Two variants of the Klein-Castor model produce He II at 4686 A in emission with 3203 A in absorption, as is commonly observed in Of spectra.

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