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      Surface Compositions Across Pluto and Charon

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          Abstract

          The New Horizons spacecraft mapped colors and infrared spectra across the encounter hemispheres of Pluto and Charon. The volatile ices CH\(_4\), CO, and N\(_2\), that dominate Pluto's surface, have complicated spatial distributions resulting from sublimation, condensation, and glacial flow acting over seasonal and geological timescales. Pluto's H\(_2\)O ice "bedrock" is also mapped, with isolated outcrops occurring in a variety of settings. Pluto's surface exhibits complex regional color diversity associated with its distinct provinces. Charon's color pattern is simpler, dominated by neutral low latitudes and a reddish northern polar region. Charon near infrared spectra reveal highly localized areas with strong NH\(_3\) absorption tied to small craters with relatively fresh-appearing impact ejecta.

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          Most cited references 51

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          Surface Ices and the Atmospheric Composition of Pluto

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            Ices on the Surface of Triton

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              Near-Infrared Spectroscopy of Simple Hydrocarbons and Carbon Oxides Diluted in Solid N2and as Pure Ices: Implications for Triton and Pluto

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                Author and article information

                Journal
                18 April 2016
                Article
                10.1126/science.aad9189
                1604.05368

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                in Science 351, aad9189 (2016)
                astro-ph.EP

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