Cratering constraints on the inner Oort cloud - Steady-state models

Details Cratering constraints on the inner Oort cloud - Steady-state models Cratering constraints on the inner Oort cloud - Steady-state models

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.235....1b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 235, Nov. 1, 1988, p. 1-32. SERC-supported research.

Astronomy and Astrophysics

Astronomy

49

Astronomical Models, Hypervelocity Impact, Oort Cloud, Planetary Craters, Constraints, Cratering, Mass, Steady State

Scientific paper

The parameters of steady-state models of the Oort cometary cloud are constrained based upon observations of long-period comets and the mean terrestrial cratering rate over the past 600 Myr. A model with a power-law distribution of orbital energies for semimajor axes greater than about 4000 AU and an energy spectral index gamma = 0.5 can be produced by an original source of comets in the Uranus-Neptune zone of the solar nebula. The total number of comets to a limiting absolute magnitude of 16 is 9.5 x 10 to the 13th.

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