Radiative accelerations in stellar atmospheres

Details Radiative accelerations in stellar atmospheres Radiative accelerations in stellar atmospheres

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...381..197h&link_type=abstract

Astronomy and Astrophysics, v.381, p.197-208 (2002)

Astronomy and Astrophysics

Astrophysics

11

Diffusion, Stars: Atmospheres, Stars: Chemically Peculiar, Stars: Abundances

Scientific paper

We present calculations of radiative accelerations obtained with the general purpose model atmosphere code PHOENIX. The accelerations are computed simultaneously for all the elements He-Ga; Kr-Nb; Ba; La, using the opacity sampling method. The calculations are mainly performed with the LTE approximation. Tests are made to evaluate the influence of non-LTE effects and the validity of the radiative flux obtained through the diffusion approximation. It is shown that the abundances supported in the atmospheres of HgMn and He-weak stars are generally consistent with those observed.

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