The Uranian satellites - Surface compositions and opposition brightness surges

Details The Uranian satellites - Surface compositions and opposition brightness surges The Uranian satellites - Surface compositions and opposition brightness surges

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...55...83b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 55, July 1983, p. 83-92.

Other

58

Brightness Distribution, Natural Satellites, Oberon, Planetary Surfaces, Uranus (Planet), Ariel, Astronomical Spectroscopy, Ice, Near Infrared Radiation, Planetary Composition, Surface Properties, Titania, Umbriel, Water, Uranus, Satellites, Surface, Composition, Brightness, Ariel, Umbriel, Titania, Oberon, Spectrophotometry, Spectra, Wavelengths, Water, Ice, Absorption, Depths, Reflectance, Comparisons, Iapetus, Color, Infrared, Brightness

Scientific paper

The present, 5 percent-resolution spectrophotometry for the Uranian satellites Ariel, Umbriel, Titania and Oberon cover the 1.43-2.57 wavelength region and confirm the presence of a spectrally dominant water ice component in their surfaces. The 1.5- and 2.0-micron water absorption band depths and continuum reflectance indicate significant differences among the surface compositional properties of the four satellites, and comparisons of the spectra with those of other solar system bodies and of laboratory water ice spectra imply the presence of a significant nonwater ice component on/in their surfaces. The nature of this nonwater ice component is suggested by the data to be similar to that of such substances as carbon black. Near-IR opposition brightness surges of Ariel, Titania and Oberon are found to be among the largest in the solar system.

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