Sublimation rates of carbon monoxide and carbon dioxide from comets at large heliocentric distances

Details Sublimation rates of carbon monoxide and carbon dioxide from comets at large heliocentric distances Sublimation rates of carbon monoxide and carbon dioxide from comets at large heliocentric distances

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..545s&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 545-548 (SEE N93-19113 06-90)

Mathematics

Carbon Dioxide, Carbon Monoxide, Comet Nuclei, Mathematical Models, Outgassing, Sublimation, Distance, Solar Orbits, Solar Position, Zenith

Scientific paper

Using a simple model for outgassing from a small flat surface area, the sublimation rates of carbon monoxide and carbon dioxide, two species more volatile than water ice that are known to be present in comets, are calculated for a suddenly activated discrete source on the rotating nucleus. The instantaneous sublimation rate depends upon the comet's heliocentric distance and the Sun's zenith angle at the location of the source. The values are derived for the constants of CO and CO2 in an expression that yields the local rotation-averaged sublimation rate as a function of the comet's spin parameters and the source's cometocentric latitude.

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