Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992cemda..54...37v&link_type=abstract
Celestial Mechanics and Dynamical Astronomy (ISSN 0923-2958), vol. 54, no. 1-3, p. 37-48.
Astronomy and Astrophysics
Astronomy
8
Comets, Interstellar Space, Oort Cloud, Solar System, Astronomical Models, Galactic Evolution, Interstellar Matter, Planetary Orbits
Scientific paper
Various dynamical possibilities of two-way exchange of comet populations between the solar system and the interstellar medium are reviewed. Ways in which a traditional Oort cloud could be captured from the interstellar medium are described. The question of how necessary the concept of the yet unobserved Kuiper belt is for the theory of short-period comets is addressed. Cross sections are derived by carrying out large numbers of comet-planet encounters and by deriving approximate analytic expressions for them. Cross sections are derived for obtaining orbits of energy and inclination after the encounter. The results are to be employed in developing evolutionary models of the comet population.
Mikkola Seppo
Valtonen Mauri J.
Zheng Jia-Qing
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