Distributed Sources in Comets

Details Distributed Sources in Comets Distributed Sources in Comets

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ssrv..138..179c&link_type=abstract

Space Science Reviews, Volume 138, Issue 1-4, pp. 179-197

Computer Science

9

Comets, Distributed Source, Extended Source, Composition, Organic Chemistry, Modelling

Scientific paper

The distribution of some molecules and radicals (H2CO, CO, HNC, CN, …) in the atmosphere of several comets cannot be explained only by a direct sublimation from the nucleus, or by gas phase processes in the coma. Such molecules are in part the result of a distributed source in the coma, which could be the photo and thermal degradation of dust. We present a review of the degradation processes and discuss possible interpretations of the observations in which the degradation of solid complex organic material in dust particles seems to play a major role. The knowledge of such gas production mechanisms provides important clues on the chemical nature of the refractory organic material contained in comet nuclei.

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