标题： 冥王星和卡戎的表面成分分布 显示英文标题

标题： Surface Compositions Across Pluto and Charon

摘要： 新视野号飞船在冥王星和卡戎的会合半球上绘制了颜色和红外光谱图。 主导冥王星地表的挥发性冰 CH$_4$、CO 和 N$_2$，由于升华、凝结和数季及地质时间尺度上的冰川流动，具有复杂的空间分布。 冥王星的地表“基岩”H$_2$O 冰也被绘制出来，孤立的露头出现在各种环境中。 冥王星的地表显示出复杂的区域性色彩多样性，这与其独特的区域有关。 卡戎的颜色模式较为简单，以中性的低纬度地区和红色的北极区域为主导。 卡戎的近红外光谱揭示了高度局部化的区域，这些区域具有强烈的 NH$_3$吸收特征，与相对新鲜的撞击喷射物的小型陨石坑有关。 显示英文摘要

摘要： 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.