Non-equilibrium chemistry in the atmospheres of brown dwarfs

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dc.creatorSaumon, D.
dc.creatorMarley, M. S.
dc.creatorLodders, K.
dc.creatorFreedman, R. S.
dc.date2002-07-02
dc.date.accessioned2026-07-07T02:04:09Z
dc.date.available2026-07-07T02:04:09Z
dc.descriptionCarbon monoxide and ammonia have been detected in the spectrum of Gl 229B at abundances that differ substantially from those obtained from chemical equilibrium. Vertical mixing in the atmosphere is a mechanism that can drive slowly reacting species out of chemical equilibrium. We explore the effects of vertical mixing as a function of mixing efficiency and effective temperature on the chemical abundances in the atmospheres of brown dwarfs and on their spectra. The models compare favorably with the observational evidence and indicate that vertical mixing plays an important role in brown dwarf atmospheres.
dc.description9 pages, 4 figures, to appear in the proceedings of the IAU symposium 211 on "Brown dwarfs"
dc.identifierhttps://arxiv.org/abs/astro-ph/0207070
dc.identifierhttp://arxiv.org/abs/astro-ph/0207070
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4639
dc.subjectAstrophysics
dc.titleNon-equilibrium chemistry in the atmospheres of brown dwarfs
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