Infrared observations of the surface and atmosphere of Titan |
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| Authors: | RF Knacke T Owen RR Joyce |
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| Institution: | Department of Earth and Space Sciences, State University of New York, Stony Brook, New York 11794, USA;Kitt Peak National Observatory, Tucson, Arizona 85717, USA |
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| Abstract: | Infrared photometry of Titan, Saturn, and Saturn's Rings at 3.5, 4.9, 17.8, and 18.4 μm is reported. Comparison of the albedo of Titan in the 4.9 μm “window” with the albedo of the rings and with laboratory spectra suggests that frost, possibly water ice, could be a major constituent. If thick clouds are present they must be very dark at 4.9 μm. The 17.8 and 18.4 μm data are not consistent with a clear, dense molecular hydrogen atmosphere. |
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