2.7- to 4.1-μm spectrophotometry of icy satellites of Saturn and Jupiter |
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Authors: | Larry A Lebofsky Michael A Feierberg |
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Institution: | Lunar and Planetary Laboratory, University of Arizona, Tuczon, Arizona 85721, USA;Mail Stop 245-6, NASA-Ames Research Center, Moffett Field, California 94035, USA |
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Abstract: | We present spectrophotometry in the 27–41 μm spectral region for icy satellites of Saturn (Tethys, Dione, Rhea, Iapetus, and Hyperion) and Jupiter (Europa, Ganymede, and Callisto). The 3.6-μm reflectance peak characteristic of fine-grained water ice is observed prominently on the satellites of Saturn, faintly on the leading side of Europa, and not all on Ganymede, Callisto, or the dark side of Iapetus. The spectral reflectances of these icy satellites may be affected by their equilibrium surface temperatures and magnetospheric effects. |
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