COS-GTO: Sleuthing the Source of Distant Cometary Activity

Details COS-GTO: Sleuthing the Source of Distant Cometary Activity COS-GTO: Sleuthing the Source of Distant Cometary Activity

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12048g&link_type=abstract

HST Proposal ID #12048. Cycle 18

Physics

Scientific paper

Distant comets and Centaurs often show cometary activity and outbursts well beyond 3 AU, the boundary of the sublimation zone of water. Super-volatiles {most likely CO, but possibly CH4, N2, or S2} are suspected to be responsible, but have never been detected in distant comets in the UV. We will obtain FUV spectra of active bodies to cover important CO emission bands. We plan two sets of observations: comet 29P/Schwassmann-Wachmann at 6 AU, whose outbursts are too short to capture as a Target of Opportunity, but which also shows persistent cometary activity in quiescence; and Target of Opportunity observations of the Centaur 2060 Chiron {at 15.5 AU} in outburst.;

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