Non-LTE line formation for SII and SIII. I. Model atoms and first results.

Details Non-LTE line formation for SII and SIII. I. Model atoms and first results. Non-LTE line formation for SII and SIII. I. Model atoms and first results.

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...311..661v&link_type=abstract

Astronomy and Astrophysics, v.311, p.661-668

Astronomy and Astrophysics

Astrophysics

23

Atomic Data, Line Formation, Stars: Abundances, Atmospheres, Early-Type

Scientific paper

Detailed model atoms for SII and SIII are presented. As a test and first application of these models, the sulphur abundance of the B type stars HR 1923, HR 2928 and HR 5285 is derived. Results based on LTE computations are compared with those from a non-LTE analysis. For the three stars in the test sample, new values of effective temperature T_eff_, gravities logg and microturbulent velocities v_turb_, based on the latest Kurucz model atmospheres are also given. A new grid of H profiles and Si equivalent widths for these models is presented.

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