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Clouds and Clearings in the Atmospheres of the L and T Dwarfs
M. S. Marley, A. Ackerman, A. J. Burgasser +3
A sophisticated approach to condensate opacity is required to properly model the atmospheres of L and T dwarfs. Here we review different models for the treatment of condensates in…
Non-equilibrium chemistry in the atmospheres of brown dwarfs
D. Saumon, M. S. Marley, K. Lodders +1
Carbon 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…
L-dwarf variability: I-band observations
Christopher R. Gelino, Mark S. Marley, Jon A. Holtzman +2
We report on the results of an I-band photometric variability survey of eighteen L dwarfs. We find that seven exhibit statistically significant variations above the 95.4% confidenc…
Evidence for Cloud Disruption in the L/T Dwarf Transition
Adam J. Burgasser, Mark S. Marley, Andrew S. Ackerman +5
Clouds of metal-bearing condensates play a critical role in shaping the emergent spectral energy distributions of the coolest classes of low-mass stars and brown dwarfs, L and T dw…