Non-LTE Model Atom Construction

Details Non-LTE Model Atom Construction Non-LTE Model Atom Construction

2010-12-02

arxiv.org/abs/1012.0600v1

EAS Publications Series 43 (2010) 115-133

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

19 pages, 8 figures

Scientific paper

10.1051/eas/1043008

Model atoms are an integral part in the solution of non-LTE problems. They comprise the atomic input data that are used to specify the statistical equilibrium equations and the opacities and emissivities of radiative transfer. A realistic implementation of the structure and the processes governing the quantum-mechanical system of an atom is decisive for the successful modelling of observed spectra. We provide guidelines and suggestions for the construction of robust and comprehensive model atoms as required in non-LTE line-formation computations for stellar atmospheres. Emphasis is given on the use of standard stars for testing model atoms under a wide range of plasma conditions.

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