The effect of Lyman-alpha on the non-LTE model atmospheres of A type stars

Details The effect of Lyman-alpha on the non-LTE model atmospheres of A type stars The effect of Lyman-alpha on the non-LTE model atmospheres of A type stars

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....86..225h&link_type=abstract

Astronomy and Astrophysics, vol. 86, no. 1-2, June 1980, p. 225-230.

Astronomy and Astrophysics

Astrophysics

8

A Stars, Line Spectra, Lyman Alpha Radiation, Nonequilibrium Thermodynamics, Stellar Atmospheres, Stellar Models, Absorption Spectra, Atmospheric Composition, Spectral Energy Distribution, Stark Effect, Stellar Temperature

Scientific paper

The importance of the Ly-alpha line in the calculation of non-LTE model atmospheres of A type stars is pointed out. It is shown that due to the specific conditions in the atmospheres of A type stars, even very far wings of Ly-alpha are important and produce considerable effects upon the atmospheric structure. The importance of a proper treatment of Stark broadening as well as redistribution in the Ly-alpha line is briefly discussed.

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