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4. Oort’s Cometary Cloud in the Light of Modern Cosmogony

Published online by Cambridge University Press:  12 April 2016

V. S. Safronov

Abstract

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Although the existence of Oort’s cometary cloud has been generally accepted, his hypothesis on its origin has been repeatedly called into question, in particular because of the large mass that Jupiter would also have simultaneously ejected out of the solar system. However, the extremely slow growth of particles in regions of small density seems to rule out that comets condensed “in situ” at their present large distances. Also, the accumulation of interstellar grains in satellite disks orbiting around the primitive solar nebula seems an “ad hoc” hypothesis that cannot be proved or disproved. Therefore, the most reasonable hypothesis is that comets were ejected from the region of the giant planets as a natural by-product of their accretion.

Type
Part VIII. The Origin of Comets
Information
International Astronomical Union Colloquium , Volume 39: Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins , December 1977 , pp. 483 - 484
Copyright
Copyright © A.H. Delsemme 1977

References

Black, D. 1976, preprint.Google Scholar
Cameron, A.G.W. 1973a, Center for Astrophys. Prepr. No. 21.Google Scholar
Cameron, A.G.W. 1973b, Icarus, 18, 407.CrossRefGoogle Scholar
Larson, R. B. 1972, in On the Origin of the Solar System, ed. Reeves, H., CNRS, Paris, p. 142.Google Scholar
Oort, J. H. 1950, Bull, Astron. Inst. Neth. 11, 91.Google Scholar
Oort, J. H. 1951, Observatory, 71, 129.Google Scholar
Ostriker, J. P. 1972, in On the Origin of the Solar System, ed. Reeves, H., CNRS, Paris, p. 163.Google Scholar
Öpik, E. J. 1973, Astrophys. Space Sci., 21, 307.Google Scholar
Safronov, V. S. 1972a, IAU Symp. No. 45, p. 329.Google Scholar
Safronov, V. S. 1972b, Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets (translated from the Russian). Nat. Tech. Inf. Service, Springfield, Virginia.Google Scholar
Whipple, F. L. 1976, in Cosmochemistry of the Moon and Planets, ed. Vinogradov, A. P..Google Scholar