Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-03-25
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures, to appear in ApJS
Scientific paper
10.1086/375213
With the goal of producing a reliable set of model atoms and singly-ionized ions for use in building NLTE model atmospheres, we have combined measured energy levels, critically-compiled line transition probabilities, and resonance-averaged calculations of photoionization cross-sections. A majority of the elements from Li to Ca are considered, covering most of the important species in late-type atmospheres. These include elements which contribute free electrons and/or continuous opacity in the ultraviolet (e.g., Mg, and Si), as well as trace elements whose abundance determinations rely on ultraviolet lines (e.g., B from B I lines). The new data complement and, for the species in common, supersede a previous collection of model atoms originally designed for use in studies of early-type stars.
Allende Prieto Carlos
Hubeny Ivan
Lambert David L.
Lanz Thierry
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