Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..275a&link_type=abstract
SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret
Astronomy and Astrophysics
Astrophysics
Scientific paper
Alkali metals are the last optical opacity source to condense out to grains in cool sub-stellar atmospheres. Their resonance lines provide a pseudo-continuum that shapes the emitted spectrum from the UV to the Near-Infrared spectral range. Model atmosphere, synthetic spectra and color predictions rely therefore on an adequate treatment of the far wings of alkali resonance lines in presence of high densities of H2 perturbers. In this poster, we present new calculations of far-wing profiles of alkali lines perturbed by H2 for the conditions prevailing in brown dwarf atmospheres.
Allard France
Allard Nicole F.
Bartholo G.
Bossy V.
Cisse I.
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