COS-GTO: Deep Search for an Oxygen Atmosphere on Callisto

Details COS-GTO: Deep Search for an Oxygen Atmosphere on Callisto COS-GTO: Deep Search for an Oxygen Atmosphere on Callisto

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11535g&link_type=abstract

HST Proposal ID #11535. Cycle 17

Computer Science

Scientific paper

We plan a deep search for 1304? and 1356? O emission from Callisto, to detect or place strong limits on the presence of a hypothesized O2 atmosphere on this moon {Liang et al. 2005}. Tenuous oxygen atmospheres on Europa and Ganymede have been detected by HST using these emission lines, but searches for O emission from Callisto have not been successful {Strobel et al. 2002}. The Liang et al. models predict O emission at levels comparable to the Strobel et al. upper limit, so the improved sensitivity of COS may be able to detect the emission, and thus Callisto's O2 atmosphere, for the first time.;

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