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Departures from lte in chemically stratified atmospheres

Published online by Cambridge University Press:  16 November 2010

R. Monier ,
B. Smalley ,
G. Wahlgren ,
Ph. Stee  and
L. Mashonkina
L. Mashonkina*
Affiliation:
Institute of Astronomy, Russian Academy of Science, Pyatnitskaya 48, 119017 Moscow, Russia. e-mail: lima@inasan.ru
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Abstract

Two astrophysical problems are reviewed where non-LTE line formation for the selected atoms is considered in a chemically stratified atmosphere and this leads to better interpretation of observed data. These are an origin of the Mn ii emission lines in the 3He and HgMn stars and a violation of the ionization equilibrium between the second and first ions of rare-earth elements in rapidly oscillating chemically peculiar stars.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 43: Non-LTE Line Formation for Trace Elements in Stellar Atmospheres , 2010 , pp. 215 - 222
Copyright
© EAS, EDP Sciences 2010

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