Completing the Dust Census of the Saturn System

Details Completing the Dust Census of the Saturn System Completing the Dust Census of the Saturn System

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50780v&link_type=abstract

Spitzer Proposal ID #50780

Physics

Scientific paper

We request a modest amount of time to conduct a speculative program to search for extended dust structures in the saturnian system with an origin associated with Iapetus. Under the influence of Poynting-Robertson drag and dynamical interaction, particles originating from this moon will uniformly populate a large toroidal region around Saturn. Recent images obtained by the Cassini spacecraft indicate that Iapetus, like Enceladus, may endogenically modify its surface and can thus be a source of such particles through intrinsic 'cometary' and/or cryovolcanic activity. This proposal follows up on Spitzer Program 40840 to search for such a dust structure associated with the satellite Phoebe. We will explore the likelihood that recent activity on Iapetus could produce dust structure surrounding Saturn that is detectable by Spitzer with contrast above the zodiacal background in less than 3 hours of observation.

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