Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jqsrt..46...41d&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 46, July 1991, p. 41-53. Research supported b
Astronomy and Astrophysics
Astrophysics
5
Astronomical Spectroscopy, Line Spectra, Lithium, Stark Effect, Stellar Atmospheres, Carbon Stars, Electrons, F Stars, Helium, Protons, Star Formation, Temperature Dependence
Scientific paper
Profiles of neutral Li lines are of interest to astrophysicists since the surface content of Li involves problems correlated with stellar nucleogenesis and with mixing between the stellar atmosphere and the interior. They should also be of interest in the study of extremely strong Li(I) features observed in a number of C and S stars as well as in studies of deep depletions in the mid-F-stars. Here, a semiclassical approach is used to evaluate electron-, proton-, and ionized helium-impact line widths and shifts for 61 neutral Li multiplets. Calculations were performed as a function of temperature and at a perturber density of 10 to the 13th/cu cm. The results are used to study Stark broadening parameter regularities within spectral series.
Dimitrijevic Milan S.
Sahal-Bréchot Sylvie
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