The origin of CS in comet IRAS-Araki-Alcock 1983d

Details The origin of CS in comet IRAS-Araki-Alcock 1983d The origin of CS in comet IRAS-Araki-Alcock 1983d

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...304..515j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 1, 1986, p. 515-518.

Astronomy and Astrophysics

Astrophysics

22

Carbon Compounds, Comet Nuclei, Iras-Araki-Alcock Comet, Iue, Photodissociation, Carbon Disulfide, Solar Radiation, Sunlight, Comets, Iras-Araki-Alcock, Origin, Carbon Monosulfide, Iue Satellite, Satellite Observations, Atmosphere, Photodissociation, Comet Nuclei, Comae, Photochemistry, Hydrodynamics, Models, Velocity, Calculations, Flow, Comparisons, Emissions, Source, Parent Molecules

Scientific paper

It is shown that the IUE observations of CS in the atmosphere of comet IRAS-Araki-Alcock 1983d are consistent with its formation by the photodissociation of CS2 released from the nucleus. The observed scale length can be matched by a calculated scale length, which is based on the photochemical lifetime of CS2 at 1 AU and hydrodynamic models of the velocity field in the coma. A flow velocity of about 0.6 km/s is required to fit the data, which is in excellent agreement with recent calculations of the flow regime in the inner coma.

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