Volume 440, Number 3, September IV 2005
|Page(s)||1195 - 1201|
|Section||Atomic, molecular, and nuclear data|
|Published online||05 September 2005|
Theoretical profiles of light alkali resonance lines for brown dwarf atmosphere conditions
Institut d'Astrophysique de Paris, UMR 7095, CNRS, Université Pierre et Marie Curie, 98 boulevard Arago, 75014 Paris, France e-mail: firstname.lastname@example.org
2 Observatoire de Paris-Meudon, LERMA, 92195 Meudon Principal Cedex, France
3 CRAL-ENS, Lyon, France
4 Department of Physics, University of Louisville, Louisville, KY 40292, USA
Accepted: 19 May 2005
The analysis of the far wings of resonance lines of alkali elements in brown dwarf spectra requires their accurate determination. A unified theory of collisional line profiles has been applied for the evaluation of absorption profiles of alkalis perturbed by helium and molecular hydrogen. The study of the dependence on temperature of the far wings of Li–He and Li–H2 collisional profiles is reported.
Key words: line: profiles / stars: low-mass, brown dwarfs
© ESO, 2005
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