The color of the Uranian rings

Details The color of the Uranian rings The color of the Uranian rings

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...72...69p&link_type=abstract

Icarus (ISSN 0019-1035), vol. 72, Oct. 1987, p. 69-78.

Computer Science

10

Color, Planetary Composition, Uranus Rings, Voyager Project, Multispectral Band Scanners, Reflectance, Visible Spectrum, Uranus, Rings, Color, Spacecraft Observations, Voyager 2 Mission, Spectra, Wavelengths, Optical Properties, Reflectivity, Composition, Comparisons, Brightness, Carbon, Photographs, Iss Instrument

Scientific paper

Observations of the Uranian rings were made in several color filters by the Voyager Imaging Science experiment in January 1986 for the purpose of determining the color of the rings. The results of the analysis are consistent with the α, β, η, γ, δ, and ɛ rings being very dark, with flat spectra throughout the visible, and are comparable to the latest Voyager results showing a lack of color for the Uranian satellites. The general lack of color in the ring/satellite system of Uranus is remarkably different than the case of the distinctly reddish systems of Jupiter and Saturn. The unique combination of low absolute reflectivity and flat spectrum which characterizes the Uranian rings supports the concept that the Uranian ring material is compositionally distinct from either the Si- and S-rich Jovian ring and inner satellites, or the water-ice-rich rings and inner satellites of Saturn. The candidate which best matches the low brightness and flat spectrum of the Uranian rings is carbon.

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