a Search for Ice at the Poles of Ceres

Details a Search for Ice at the Poles of Ceres a Search for Ice at the Poles of Ceres

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5842s&link_type=abstract

HST Proposal ID #5842

Physics

Hst Proposal Id #5842 Solar System

Scientific paper

One of the most intriguing suggestions about the largest asteroid, 1 Ceres, is that it may display water-ice on its surface. IR evidence for this hypothesis was presented over 12 years ago in the form of H_2O-ice absorption on Ceres' surface. Recently, however, King et al., have suggested the IR absorption attributed to water-ice may instead be due to NH_4- bearing minerals. IUE searches for OH emission resulting from the dissociation of water vapor above Ceres have yielded contradictory results. We propose to address this long-standing controversy using a new approach. We will obtain maps of Ceres in NUV, MUV, and FUV filters that together will discriminate for the presence or absence of significant quantities of surface ice. As a byproduct, these images will also provide the first-ever global maps of the albedo distribution on Ceres.

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