Can ice survive in main-belt comets? Long-term evolution models of comet 133P/Elst-Pizarro

被引：62

作者：

Prialnik, Dina ^{[1
]}

Rosenberg, Eric D. ^{[1
]}

机构：

[1] Tel Aviv Univ, Dept Geophys & Planetary Sci, IL-69978 Tel Aviv, Israel

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2009年 / 399卷 / 01期

关键词：

comets: general; comets: individual: 133P/Elst-Pizarro;

D O I：

10.1111/j.1745-3933.2009.00727.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present detailed evolutionary calculations spanning 4.6 x 10(9) yr for a model representing main-belt comet 133P/Elst-Pizarro, considering different initial compositions: mixtures of ices and dust. We find that only crystalline H2O ice may survive in the interior of the nucleus, and may be found at depths ranging from similar to 50 to 150 m. Other volatiles will be completely lost. We further show, by means of fully three-dimensional evolutionary calculations, that if the ice is exposed, say as a result of a collision, the resulting activity is similar to the observed pattern of the behaviour of the comet for a large spin axis inclination, even if only a patch of ice is exposed.

引用

页码：L79 / L83

页数：5

共 20 条

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