Multiline transfer and the dynamics of Wolf-Rayet winds

Details Multiline transfer and the dynamics of Wolf-Rayet winds Multiline transfer and the dynamics of Wolf-Rayet winds

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..738l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 738-746.

Astronomy and Astrophysics

Astrophysics

134

Mass Flow, Monte Carlo Method, Radiative Transfer, Stellar Winds, Wolf-Rayet Stars, Astronomical Models, Electron Scattering, Line Spectra, Luminosity, Photoionization, Radiation Pressure, Stratification

Scientific paper

A Monte Carlo technique for treating multiline transfer in stellar winds is extended to permit the modeling of the dense and highly stratified winds of Wolf-Rayet stars. Radiatively driven solutions are reported for parameters representing a typical WN5 star, and these have mass-loss rates that exceed the single-scattering limit by factors about 10. The basic physical effect allowing such high mass-loss rates is the highly effective photon trapping brought about by the strong stratification of ionization, which, in the form of the inverse correlation between line width and ionization potential, is an observed phenomenon for both the WN and WC sequences. As a result of photon trapping, approximately 5 percent of the photon luminosity in the WN5 models is converted into corpuscular luminosity.

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