Thermal evolution of Comet P/Tempel 1 - Representing the group of targets for the CRAF and CNSR missions

Details Thermal evolution of Comet P/Tempel 1 - Representing the group of targets for the CRAF and CNSR missions Thermal evolution of Comet P/Tempel 1 - Representing the group of targets for the CRAF and CNSR missions

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...79..116b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 79, May 1989, p. 116-124. Research supported by NASA and Adler Fund for Space Research.

Physics

5

Comet Nuclei, Comet Rendezvous Asteroid Flyby Mission, Cometary Atmospheres, Comets, Evolution (Development), Amorphous Materials, Crystallinity, Ice, Interplanetary Dust, Comets, Tempel 1, Thermal Properties, Evolution, Mission Planning, Models, Craf Mission, Cnsr Mission, Physical Properties, Comet Nuclei, Parameters, Procedure, Probes, Sampling, Calculations, Composition, Crust, Ice, Icy Bodies, Depth, Dust, Surface

Scientific paper

A numerical definition of the thermal evolution of spherically symmetric models of the nucleus in the orbit of Comet P/Tempel-1 is presently used to ascertain the properties of the outer layers of comets under consideration for the future Comet Rendezvous and Asteroid Flyby and the Comet Nucleus Sample Return missions. Evolutionary sequences are computed for different values of density, dust/ice mass ratio, and the dust fraction not lost with ice sublimation. It is found that inner and outer surface temperatures of the dust mantle are comparatively insensitive to parameter changes, and that the total thickness of the crystalline ice layer between the dust mantle and the amorphous ice core will make it difficult for the comet-mission probes to sample pristine ice.

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