Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.219..267d&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 219, no. 2, p. 267-273
Astronomy and Astrophysics
Astrophysics
2
B Stars+Efficiency, Light Scattering, Momentum Transfer, Radiation Distribution, Stellar Luminosity, Stellar Models, Stellar Winds, Supergiant Stars, Wolf-Rayet Stars, Calcium, H Beta Line, Hydrogen, Iron, Iue, Line Spectra, Local Thermodynamic Equilibrium, Magnesium, Manganese, Titanium
Scientific paper
The wind characteristics of a small group of luminous B-type stars are invesigated. They present a 'momentum problem', similar to but not as obvious as that seen in Wolf-Rayet stars. However, there is no violation of a fundamental limit since the energy to be extracted from the radiation field is small. Moreover, their mass loss rates can be roughly reproduced in the context of a radiation-driven wind provided we make use of larger values for the radiative parameter k.
de Araújo Francisco Xavier
de Freitas Pacheco José Antonio
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