Models of the cometary coma in which abundances are calculated for various heliocentric distances

Details Models of the cometary coma in which abundances are calculated for various heliocentric distances Models of the cometary coma in which abundances are calculated for various heliocentric distances

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...47..412s&link_type=abstract

(International Astronomical Union and American Astronomical Society, Colloquium on Comets: Gases, Ices, Grains, and Plasma, 61st

Astronomy and Astrophysics

Astronomy

18

Abundance, Astronomical Models, Comets, Reaction Kinetics, Solar Radiation, Carbon Dioxide, Comet Nuclei, Density Distribution, Hydrocarbons, Interstellar Matter, Water Vapor, Bradfield Comet, Bennett Comet, West Comet, Kohoutek Comet, P/Encke Comet, Kobayashi-Berger Milon Comet, Kohler Comet, P/Grigg-Skjellerup Comet, Data, Meier Comet, P/Wild 2 Comet, P/D'Arrest Comet, P/Ashbrook-Jackson Comet, P/Stephan-Oterma Comet, Comets, Comae, Models, Abundance, Comparisons, Chemistry, Opacity, Solar Radiation, Phot

Scientific paper

The variations of coma abundances with heliocentric distances in the range 0.125-2.0 AU are considered. Comparisons with observed abundance variations provide a stringent test of basic physical assumptions. The coma's opacity to solar radiation is included, and photolytic reaction rates are calculated, for the case of a parent volatile mixture similar to that found in interstellar molecular clouds is assumed. Tabulations are presented of (1) profiles through the coma of number density and column density for H2O, OH, O, CN, C2, C3, CH, and NH2, and (2) whole comma abundances of NH2, CH, C2, C3, CN, OH, CO(+), H2O(+), CH(+), N2(+), and CO2(+).

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