Computer Science
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...64..125h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 64, Oct. 1985, p. 125-132.
Computer Science
14
Io, Planetary Composition, Sulfur, Absorption Spectra, Albedo, Infrared Spectra, Light Curve, Reflectance, Jupiter, Satellites, Io, Sulfur, Allotropes, Ultraviolet, Wavelengths, Visible Light, Reflectivity, Temperature, Spectra, Eclipses, Brightness, Models, Color, Sulfur Dioxide, Surface, Frost, Albedo, Condensation, Earth-Based Observations, Telescope Methods
Scientific paper
The surface of Io experiences temperature changes during eclipses which are sufficient to cause a detectable change in the spectral reflectivity of sulfur; thus, if the surface of Io is composed primarily of sulfur allotropes, a change in reflectivity at certain wavelengths should be observable shortly after eclipse reappearance. The authors observed four eclipse reappearances during July and August of 1983 and saw no posteclipse brightening effects in filter bands selected for sensitivity to color changes in sulfur. Negative posteclipse brightening observations were also obtained with a filter chosen for the high contrast between SO2 frost and the average albedo of the surface of Io at that wavelength. It is concluded that no significant condensation of optically thick SO2 occurred on the surface of Io during these eclipses.
Cruikshank Dale P.
Goguen Jay D.
Hammel Heidi Beth
Sinton William M.
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