Peripheral Structures of Planetary Systems

Details Peripheral Structures of Planetary Systems Peripheral Structures of Planetary Systems

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sosyr..38..279t&link_type=abstract

Solar System Research, v. 38, Issue 4, p. 279-287 (2004).

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Scientific paper

We analyze the conditions for the formation and time evolution of peripheral comet structures of solar-type planetary systems. In the Solar system, these include the Kuiper belt, the Oort cloud, the comet spear, and the Galactic comet ring that marks the Galactic orbit of the Sun. We consider the role of the viscosity of a protoplanetary gas-dust disk, major planets, field stars, globular clusters, giant molecular clouds, and the Galactic gravitational field in the formation of these peripheral structures marked by comets and asteroids. We give a list of the closest past and future passages of neighboring stars through the solar Oort cloud that perturb the motion of its comets and, thus, contribute to the enhancement of its cometary activity, on the one hand, and to the replenishment of the solar comet spear with new members, on the other hand.

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