The origin of short-period comets

Details The origin of short-period comets The origin of short-period comets

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...86....2b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 86, July 1990, p. 2-8. Research supported by SERC.

Mathematics

Probability

17

Comets, Oort Cloud, Orbital Mechanics, Cometary Atmospheres, Solar System, Comets, Short-Period Comets, Origin, Source, Orbits, Capture, Models, Theoretical Studies, Oort Cloud, Calculations, Abundance, Concentration, Orbital Elements, Inclination, Parameters, Flux

Scientific paper

If the observed number of short-period comets can be accounted for by a spherically symmetric model of the Oort cloud, in conjunction with an inner core of merely moderate central concentration, then the observed correlation between the ecliptic plane and the inclinations of Jupiter-family short-period comets may be seen as partly due to the calculated decrease in capture probability with inclination, and partly to the effects of cometary decay and observational selection. The implied constraint on the inner core becomes even more severe, if a hypothetical comet disk in the Uranus-Neptune zone either makes a significant contribution to the observed short-period comets or if these comets' mean lifetime is greater than 3000 years.

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