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      Atmospheric Chemistry of the Brown Dwarf Gliese 229B: Thermochemical Equilibrium Predictions

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      The Astrophysical Journal
      University of Chicago Press

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          Chemical Models of the Deep Atmospheres of Jupiter and Saturn

          B Fegley (1994)
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            Carbon Monoxide on Jupiter and Implications for Atmospheric Convection

            A study of the equilibrium and disequilibrium thermochemistry of the recently discovered carbon monoxide on Jupiter suggests that the presence of this gas in the visible atmosphere is a direct result of very rapid upward mixing from levels in the deep atmosphere where the temperature is about 1100 degrees K and where carbon monoxide is thermodynamically much more stable. As a consequence the observed carbon monoxide mixing ratio is a sensitive function of the vertical eddy mixing coefficient. We infer a value for this latter coefficient which is about three to four orders of magnitude greater than that in the earth's troposphere. This result directly supports existing structural and dynamical theories implying very rapid convection in the deep Jovian atmosphere, driven by an internal heat source.
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              Synthetic Spectra and Mass Determination of the Brown Dwarf Gliese 229B

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                Author and article information

                Journal
                The Astrophysical Journal
                University of Chicago Press
                0004637X
                November 1996
                : 472
                : 1
                : L37-L39
                Article
                10.1086/310356
                27693b44-861b-4a49-877c-39eba2972da3
                History

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