Cometary spliting - a source for the Jupiter family?

Details Cometary spliting - a source for the Jupiter family? Cometary spliting - a source for the Jupiter family?

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281..579p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 2, p. 579-587

Astronomy and Astrophysics

Astrophysics

15

Astronomical Models, Comets, Fragmentation, Orbital Mechanics, Solar Orbits, Solar System, Splitting, Computerized Simulation, Dynamic Models, Jupiter (Planet), Mathematical Models, Monte Carlo Method, Comets, Jupiter Family, Splitting, Origin, Source, Orbit, Parameters, Fragments, Distribution, Monte Carlo Method, Model, Orbital Elements, Simulation, Distance, Perihelion, Aphelion, Inclination, Perturbation, Jupiter, Hypotheses, Statistical Analysis, Timescale

Scientific paper

The quest for the origin of the Jupiter family of comets includes investigating the possibility that a large fraction of this population originates from past splitting events. In particular, one suggested scenario, albeit less attractive on physical grounds, maintains that a giant comet breakup is a major source of short-period comets. By simulating such events and integrating the motions of the fictitious fragments in an accurate solar system model for the typical lifetime of Jupiter family comets, it is possible to check whether the outcome may or may not be compatible with the observed orbital distribution. In this paper we present such integrations for a few typical progenitor orbits and analyze the ensuing thermalization process with particular attention to the Tisserand parameters. It is found that the sets of fragments lose their memory of a common origin very rapidly so that, in general terms, it is difficult to use the random appearance of the observed orbital distribution as evidence against the giant comet splitting hypothesis.

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