Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..252w&link_type=abstract
Astrophysical Journal, Part 1, vol. 212, Feb. 15, 1977, p. 252-261.
Astronomy and Astrophysics
Astrophysics
3
Absorption Spectra, Abundance, Atmospheric Composition, Jupiter Atmosphere, Methane, Atmospheric Models, Atmospheric Scattering, Atmospheric Stratification, Infrared Spectra, Spectral Bands
Scientific paper
New laboratory data on methane in the 0.7-1.0 micron region are used to interpret Jovian spectra and center-to-limb variations in this region, as well as the previously available information on the 3 nu 2 band. Two laterally homogeneous scattering models are used in the interpretation; one consists of a homogeneous cloud with an overlying clear gas layer in which absorption occurs in both regions; the second is the Danielson-Tomasko four-layer model. It is found that both models can be adjusted to yield good fits to the observations. However, it may be that the Danielson-Tomasko model should be rejected on the grounds that its upper cloud would have to have too low a pressure to be identified with ammonia, as was originally suggested. The two models yield CH4/H2 concentration mixing ratios of about 0.001 and 0.002, respectively, as compared with 0.0007 for solar composition.
Smith Gary R.
Wallace Laura
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