C2 photolytic processes in cometary comae

Details C2 photolytic processes in cometary comae C2 photolytic processes in cometary comae

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...289..388c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 289, Feb. 1, 1985, p. 388-391.

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11

Carbon, Coma, Comet Nuclei, Photolysis, Solar System, Acetylene, Chemical Equilibrium, Photodissociation, Reaction Kinetics, Stellar Evolution, Comets, Comae, Carbon, Photolysis, Density, Tuttle, Meier, Chemistry, Models, Reactions, Production Rate, Photometry, Molecular Processes

Scientific paper

The authors present observations of C2 column densities of comets Tuttle 1980h and Meier 1980q. Nonequilibrium chemical models are fitted to the data. It is shown that new rates for the photolytic reactions affecting the creation and destruction of C2 are necessary. These new rates are: [C2H+hν→C2+H] 5×10-4 s-1 for creation and [C2+hν→C+C] 4×10-6 s-1 for destruction. Other possible methods for altering the photometric profiles of C2 are discussed.

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