Methane absorption in the atmosphere of Saturn : Rotational temperature and abundance from the 3ν30 band |
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| Authors: | JT Bergstralh |
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| Institution: | University of Texas, McDonald Observatory, Fort Davis, Texas 79734, USA |
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| Abstract: | Three high-dispersion spectra of Saturn, in the methane 3ν3 band at 1.1 μm, were obtained during September and October, 1970. Tracings of these spectra have been measured, and reduced by a curve of growth technique which assumes a reflecting-layer model and Lorentzian line profiles. The reductions yield a range of rotational temperatures from 122 to 142°K, and methane line-of-sight abundances, ηN, from 86 ± 14 to 51 ± 11 m amagat, depending on the value of the Lorentz halfwidth, a, used in computation of the curves of growth. |
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