A 0.4-2.5 μm spectroscopic investigation of Triton's two faces |
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| Authors: | S Marchi C Barbieri TC Owen |
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| Institution: | a Department of Astronomy, Vicolo dell'Osservatorio 2, Padova 35122, Italy
b Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA |
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| Abstract: | We have obtained new observations of Triton with the ESO New Technology Telescope (La Silla, Chile) in October 2002. Using the high quality of NTT instrumentation, we were able to cover the entire 0.4-2.5 μm spectral range in a single night. We applied this procedure for two nights, well selected along the orbit of Triton, in order to cover essentially the trailing side one night, and the leading one the other night, obtaining the first face-resolved 0.4-2.4 μm spectra of Triton. We discuss here the spectra and the differences between the two faces, and the implications of these new results for a better understanding of the surface composition of Triton. In particular we found possible clues for the presence of rocky materials on Triton's surface. |
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| Keywords: | Spectroscopy Triton Infrared observations Surfaces satellites |
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