Chemistry in cometary comae

被引：33

作者：

Irvine, WM ^{[1
]}

Dickens, JE

Lovell, AJ

Schloerb, FP

Senay, M

Bergin, EA

Jewitt, D

Matthews, HE

机构：

[1] Univ Massachusetts, Five Coll Radio Astron Observ, Amherst, MA 01003 USA

[2] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

[3] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

[4] Joint Astron Ctr, Hilo, HI 96720 USA

来源：

FARADAY DISCUSSIONS | 1998年 / 109卷

关键词：

D O I：

10.1039/a709289j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Significant gas-phase chemistry occurs in the comae of bright comets, as is demonstrated here for the case of Comet Hale-Bopp. The abundance ratio of the two isomers, hydrogen cyanide and hydrogen isocyanide, is shown to vary with heliocentric distance in a way that is consistent with production of HNC by ion-molecule chemistry initiated by the photoionization of water. Likewise, the first maps of emission from HCO+ show an abundance and an extended distribution that are consistent with the same chemical model.

引用

页码：475 / 492

页数：18

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