Detection of Co and ethane in comet 21P/Giacobini-Zinner: Evidence for variable chemistry in the outer solar nebula

被引：59

作者：

Mumma, MJ ^{[1
]}

DiSanti, MA

Dello Russo, N

Magee-Sauer, K

Rettig, TW

机构：

[1] NASA, Goddard Space Flight Ctr, Extraterr Phys Lab, Greenbelt, MD 20771 USA

[2] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[3] Rowan Univ, Dept Chem & Phys, Glassboro, NJ 08028 USA

[4] Univ Notre Dame, Dept Phys & Astron, Notre Dame, IN 46556 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 531卷 / 02期

基金：

美国国家航空航天局;

关键词：

comets : general; comets : individual (P/Giacobini-Zinner); infrared : solar system; solar system : formation;

D O I：

10.1086/312530

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Ethane and carbon monoxide were detected in a short-period comet of probable Kuiper Belt origin. Ethane is substantially less abundant compared with Hyakutake and Hale-Bopp, two comets from the giant-planet region of the solar nebula, suggesting a heliocentric gradient in ethane in precometary ices. It is argued that processing by X-rays from the young Sun may be responsible.

引用

页码：L155 / L159

页数：5

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