Discovery of co2 ice and leading-trailing spectral asymmetry on the uranian satellite ariel

Details Discovery of co2 ice and leading-trailing spectral asymmetry on the uranian satellite ariel Discovery of co2 ice and leading-trailing spectral asymmetry on the uranian satellite ariel

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icar..162..222g&link_type=abstract

Icarus, Volume 162, Issue 1, p. 222-229.

Computer Science

17

Ices, Satellite Surfaces, Satellites Of Uranus, Infrared Observations

Scientific paper

New 0.8- to 2.4-μm spectral observations of the leading and trailing hemispheres of the uranian satellite Ariel were obtained at IRTF/SpeX during 2002 July 16 and 17 UT. The new spectra reveal contrasts between Ariel's leading and trailing hemispheres, with the leading hemisphere presenting deeper H2O ice absorption bands. The observed dichotomy is comparable to leading-trailing spectral asymmetries observed among jovian and saturnian icy satellites. More remarkably, the trailing hemisphere spectrum exhibits three narrow CO2 ice absorption bands near 2 μm. This discovery of CO2 ice on one hemisphere of Ariel is its first reported detection in the uranian system.

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