Computer Science
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994icar..107..413s&link_type=abstract
Icarus, vol. 107, no. 2, p. 413-417
Computer Science
15
Absorption Spectra, Abundance, Ice, Io, Sulfur Dioxides, Water, Chemical Composition, Kuiper Airborne Observatory, Spectrum Analysis, Jupiter, Satellites, Io, Water, Aircraft Observations, Kao Aircraft, Optical Properties, Spectroscopy, Spectra, Absorption, Composition, Reflectivity, Sulfur Dioxide, Mixing, Ice, Hydroxyl, Comparison
Scientific paper
A strong absorption band at 3590 +/- 20/cm (2.790 +/- 0.015 microns) has been discovered in the spectrum of Io using the Kuiper Airborne Observatory (KAO). The 2nu1 + nu3 combination mode of solid SO2 falls at this position. Since SO2 is abundant on Io it must contribute to the new band. However, a band due to H2O was predicted near this frequency in Io's spectrum based on laboratory experiments of H2O:SO2 mixed Io ice analogs which were used to assign the two weak, variable features at 3370 and 3170/cm (2.97 and 3.15 microns) to trace amounts of H2O frozen in solid SO2 on Io. The new band probably originates from both SO2 and H2O. Unfortunately, the spectral resolution of the data is insufficient to settle the issue of whether there are two resolvable components.
Allamandola Louis J.
Bregman Jesse D.
Cruikshank Dale P.
Salama Farid
Sandford Scott A.
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