Other
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...73..330w&link_type=abstract
Icarus (ISSN 0019-1035), vol. 73, Feb. 1988, p. 330-348.
Other
83
Accretion Disks, Eccentric Orbits, Kepler Laws, Orbital Resonances (Celestial Mechanics), Planetary Orbits, Protoplanets, Corotation, Density Wave Model, Orbit Decay, Perturbation Theory, Planetary Evolution, Solar System, Planets, Disk, Interactions, Orbits, Eccentricity, Evolution, Density, Planetesimals, Corotation, Resonance, Perturbations, Damping, Models, Torque, Decay, Celestial Mechanics, Parameters, Calculations
Scientific paper
The eccentricity evolution from density wave interaction between a planetesimal and a Keplerian disk is studied. While it is known that Lindblad resonances both interior and exterior to the perturber's orbit excite its eccentricity, the author shows that corotation resonances in these regions become ineffective at eccentricity damping if the object is embedded in a continuous disk without a gap. However, under these conditions another class of Lindblad resonances exists. These operate on disk material co-orbiting with the perturber and become the most important source of eccentricity damping. The author employs a model problem to obtain estimates of the various disk torques and concludes that the eccentricity ultimately suffers decay. The limitations of this model are also discussed.
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