The mass disruption of Oort cloud comets

被引：71

作者：

Levison, HF

Morbidelli, A

Dones, L

Jedicke, R

Wiegert, PA

Bottke, WF

机构：

[1] SW Res Inst, Boulder, CO 80302 USA

[2] Observ Cote Azur, F-06034 Nice 4, France

[3] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[4] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

SCIENCE | 2002年 / 296卷 / 5576期

关键词：

D O I：

10.1126/science.1070226

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have calculated the number of dormant, nearly isotropic Oort cloud comets in the solar system by (i) combining orbital distribution models with statistical models of dormant comet discoveries by well-defined surveys and (ii) comparing the model results to observations of a population of dormant comets. Dynamical models that assume that comets are not destroyed predict that we should have discovered similar to100 times more dormant nearly isotropic comets than are actually seen. Thus, as comets evolve inward from the Oort cloud, the majority of them must physically disrupt.

引用

页码：2212 / 2215

页数：5

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