Evidence for Crystalline Water and Ammonia Ices on Pluto's Satellite Charon
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- 7 January 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 287 (5450) , 107-109
- https://doi.org/10.1126/science.287.5450.107
Abstract
Observations have resolved the satellite Charon from its parent planet Pluto, giving separate spectra of the two objects from 1.0 to 2.5 micrometers. The spectrum of Charon is found to be different from that of Pluto, with water ice in crystalline form covering most of the surface of the satellite. In addition, an absorption feature in Charon's spectrum suggests the presence of ammonia ices. Ammonia ice–water ice mixtures have been proposed as the cause of flowlike features observed on the surfaces of many icy satellites. The existence of such ices on Charon may indicate geological activity in the satellite's past.Keywords
This publication has 15 references indexed in Scilit:
- Galileo's Multiinstrument Spectral View of Europa's Surface CompositionIcarus, 1999
- Hydrated salt minerals on Europa's surface from the Galileo near‐infrared mapping spectrometer (NIMS) investigationJournal of Geophysical Research, 1999
- Production and Optical Constants of Ice Tholin from Charged Particle Irradiation of (1:6) C2H6/H2O at 77 KIcarus, 1993
- Rheological properties of ammonia-water liquids and crystal-liquid slurries: Planetological applicationsIcarus, 1991
- Amorphization of cubic ice by ultraviolet irradiationNature, 1990
- Solid organic residues produced by irradiation of hydrocarbon-containing H2O and H2O/NH3 ices: Infrared spectroscopy and astronomical implicationsIcarus, 1989
- Water frost on CharonNature, 1987
- Production of ammonia-depleted surface layers on the saturnian satellites by ion sputteringNature, 1984
- Volcanism and igneous processes in small icy satellitesNature, 1982
- Satellites of the outer planets: Their physical and chemical natureIcarus, 1971