Computer Science
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...83...66s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 83, Jan. 1990, p. 66-82. Research supported by NASA.
Computer Science
51
Hydrogen Sulfide, Icy Satellites, Infrared Spectra, Io, Sulfur Dioxides, Water, Absorption Spectra, Satellite Surfaces, Spectral Reflectance, Jupiter, Satellites, Spectra, Hydrogen Sulfide, Water, Sulfur Dioxide, Io, Infrared, Spectra, Laboratory Studies, Ice, Surface, Absorption, Frost, Irradiation, Temperature, Comparisons, Reflectance, Composition, Mixtures, Condensation, Formation, Pressure, Sublimation, Procedure, Earth-Based Observations, Ultraviolet, Icy Bodies, Wavelengths
Scientific paper
The present analysis of IR spectra of Io in the 2.5-5.0 micron region with laboratory data on plausible surface ices gives attention to four unidentified features exhibiting spatial and temporal band strength variations; these fall close to the fundamental stretching modes in H2S and H2O, respectively. It is suggested that the 3.85- and 3.91-micron bands in the Io spectra can be accounted for by the absorption of the S-H stretching vibration in H2S clusters and isolated molecules in an SO2-dominated ice. The observations resemble the transmission spectra of SO2 ices that contain about 3 percent H2S and 0.1 percent H2O.
Allamandola Louis J.
Bregman Jesse D.
Cruikshank Dale P.
Salama Farid
Sandford Scott A.
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