Physical and Dynamical Evolution of Comets

Details Physical and Dynamical Evolution of Comets Physical and Dynamical Evolution of Comets

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0815s&link_type=abstract

American Astronomical Society, DPS meeting #28, #08.15; Bulletin of the American Astronomical Society, Vol. 28, p.1086

Astronomy and Astrophysics

Astronomy

Scientific paper

Estimates of the contribution of various sources to the origin of the Jupiter-Family of short-period comets have been made by several authors. For example, Fernandez and Ip (In Asteroids, Comets and Meteors, eds., C.-I. Lagerkvist et al., p. 387, 1983) estimated a steady-state number of just 2.8 short-period comets (H10 <= 7) derived from the evolution of ``new'' long-period comets from the Oort cloud. We introduce a simple model that accomodates both splitting and a finite physical lifetime for active Jupiter-Family comet evolution and examine the effects of different assumptions for the cometary brightness distribution. We find that the observed number of short-period comets can be derived from the present flux of ``new'' long-period comets, but that the uncertainty in the values of the input parameters of the model result in a large uncertainty in the derived steady-state population.

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