Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..723n&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 198, Feb. 1982, p. 723-735.
Astronomy and Astrophysics
Astronomy
47
Comets, Interstellar Matter, Molecular Clouds, Nebulae, Tides, Astronomical Models, Numerical Integration, Oort Cloud, Orbital Mechanics, Space Density, Comets, Planetesimals, Clouds, Tidal Effects, Nebula, Oort Cloud, Data, Models, Long Period Comets, Origin, Perturbations, Physical Properties, Frequency, Velocity, Escape, Eccentricity, Radii, Source
Scientific paper
The Oort cometary cloud is subject to tidal disruption during close encounters with massive nebulae. The process is studied by numerical integration of about 33,000 comet orbits, using realistic models of the Oort cloud and the interstellar medium. It is found that the cloud is rapidly cleared of long period comets, and it is concluded that such comets are probably interstellar in origin. A capture event or tidal disturbance may have taken place less than about a few tens of millions of years ago.
Napier Mcd. W.
Staniucha M.
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