Exploring Triton in the Act of Global Change

Details Exploring Triton in the Act of Global Change Exploring Triton in the Act of Global Change

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8218s&link_type=abstract

HST Proposal ID #8218

Physics

Hst Proposal Id #8218 Solar System

Scientific paper

Triton appears to be undergoing the start of a long-awaited, and perhaps fundamental, global seasonal change. As a result of this change, seasonally deposited ices should sublime into the atmosphere, revealing extensive areas of the more permanent underlying surface, most likely with different photometric properties. We propose a 3-orbit Cycle 8 program consisting of STIS mid-UV spectroscopy and VIS/mid-UV imaging in order to better quantify the changes now underway, and to provide a critical benchmark for Triton's photometric state before still more time elapses. HST is required for this work owing to Triton's small {0.13"} apparent diameter and the need for UV observations.

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