Cosmic roulette: Comets in the main belt asteroid region

被引：10
|
作者：
Beech, M [1 ]
Gauer, K
机构：
[1] Univ Regina, Camp Coll, Regina, SK S4S 0A2, Canada
[2] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada
来源：
EARTH MOON AND PLANETS | 2000年 / 88卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
asteroid impacts; Comet; 28P/Neujmin; 1; cometary nuclei; cometary outbursts;
D O I：
10.1023/A:1019813115494
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have produced top ten ranked lists of impact velocity, main belt asteroid region dwell times and impact probabilities for a selection of short period comets. The comet with the combined highest ranking with respect to impact probability and impact velocity is Comet C/1766 G1 Helfenzrieder. Since it is not clear that this comet still exists, the highest ranked, presently active, comet with respect to the likelihood of suffering impacts from meter-sized objects while in the main belt asteroid region is Comet 28P/Neujmin 1. We find no evidence to support the existence of a distinctive sub-set of the short period comets liable to show repeated outburst or splitting behaviours due to small body, meter-sized, asteroid impacts.
引用
收藏
页码：211 / 221
页数：11
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