Other
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...70....1o&link_type=abstract
Icarus (ISSN 0019-1035), vol. 70, April 1987, p. 1-12.
Other
56
Atmospheric Composition, Infrared Spectra, Neptune Atmosphere, Stratosphere, Uranus Atmosphere, Hydrocarbons, Hydrogen, Infrared Telescopes, Planetary Temperature, Uranus, Spectra, Neptune, Planets, Wavelengths, Spectrometry, Mixing, Optical Properties, Emissions, Stratosphere, Comparisons, Opacity, Collisions, Absorption, Aerosols, Saturation, Hydrocarbons, Equilibrium, Infrared, Earth-Based Observations, Telescope Methods, Thermal Properties
Scientific paper
The 3-m NASA Infrared Telescope Facility was used to observe the disks of Uranus and Neptune between May 30 and June 1, 1985 in the 7-14 and 17-23 micron spectral regions. Maximum stratospheric mixing ratios of 9 x 10 to the -9th for C2H2, and of 2 x 10 to the -8th for C2H6, are found for Uranus, and the spectrum is otherwise smooth, consistent with the opacity provided by H2 collision-induced absorption and spectrally continuous stratospheric emission. Strong emission features of CH4 and C2H6 are found in the short-wavelength spectrum of Neptune, and the spectrum near 13.5 microns is consistent with C2H2 emission in local saturation equilibrium with a maximum mixing ratio of 9 x 10 to the -7th.
Aitken David K.
Caldwell J. Jr. J.
Orton Glenn S.
Roche Patrick F.
Smith Christopher
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