Spectral reflectance of solid sulfur trioxide (0.25-5.2 micron) - Implications for Jupiter's satellite Io

Details Spectral reflectance of solid sulfur trioxide (0.25-5.2 micron) - Implications for Jupiter's satellite Io Spectral reflectance of solid sulfur trioxide (0.25-5.2 micron) - Implications for Jupiter's satellite Io

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...66..181n&link_type=abstract

Icarus (ISSN 0019-1035), vol. 66, April 1986, p. 181-187.

Computer Science

8

Infrared Reflection, Io, Near Infrared Radiation, Solidified Gases, Spectral Reflectance, Sulfur Oxides, Ultraviolet Spectra, Absorption Spectra, Jupiter Atmosphere, Jupiter Satellites, Jupiter, Satellites, Io, Reflectance, Spectra, Solid Phase, Albedo, Sulfur Trioxide, Comparisons, Optical Properties, Laboratory Studies, Absorption, Abundance, Concentration, Surface, Resurfacing, Ejecta, Volcanism, Timescale, Ultraviolet, Near-Infrared, Wavelengths

Scientific paper

Laboratory data on the UV and near-IR spectra of SO3 are compared with spectra obtained for the Jovian moon Io by the Voyager and IUE satellites. The experimental data were taken at wavelengths from 0.25 micron to nearly 6 microns, although only order-of-magnitude estimates could be made of the associated particle sizes. Tests were also performed to identify the spectral characteristics with succeedingly lower concentrations of SO3 relative to SO2, which is apparently abundant on the Io surface. No evidence was found for the presence of solid SO3 in the spectra of Io down to projected concentrations lower than 1 percent. The findings are considered surprising since it is known that particle bombardment will cause SO3 to form in SO2 concentrations. It is expected that SO3 will be detected by the IR mapping instrument to be carried by the Galileo spacecraft.

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