Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..885t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Dec. 15, 1986, p. 885-895.
Astronomy and Astrophysics
Astronomy
26
Comets, Elliptical Orbits, Interstellar Matter, Oort Cloud, Solar System, Tides, Gravitational Effects, Molecular Clouds, Monte Carlo Method, Perturbation Theory, Stellar Motions
Scientific paper
The average infall rate for very long-period comets has usually been assumed to be due to the gravitational perturbations of random passing stars on the Oort cloud of comets. Interstellar clouds and the tides of the Galaxy can, however, also contribute to the equilibrium influx. Estimates of the efficiencies of each process lead to the conclusion that the supply of comets to the inner solar system is dominated by the tides of the Galaxy. This result indicates the need for reassessment of Oort cloud dynamics.
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