Neutral cometary atmospheres. V - C2 and CN in comets

Details Neutral cometary atmospheres. V - C2 and CN in comets Neutral cometary atmospheres. V - C2 and CN in comets

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..472c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 472-484.

Other

32

Carbon, Chemical Composition, Cometary Atmospheres, Cyanides, Photochemical Reactions, Astronomical Photometry, Distance, Monte Carlo Method, Photolysis, Solar Orbits

Scientific paper

Brightness profiles of C2 in comets Bennett 1970 II and Kohoutek 1973 XII are presented. Model analysis of these profiles yields radial Haser scale lengths for production and destruction of C2 which, when combined with other scale length determinations in the literature, are shown to vary as the square of the heliocentric distance. This is consistent with photochemical production and destruction. Also presented is an updated compilation of CN scale lengths. A reanalysis of published cometary photometry, using the new scale length laws, yields a C2 to CN ratio which is independent of heliocentric distance.

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