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Chemistry in cometary comae (1998)

Irvine, W. M. ; Bergin, E. A. ; Lovell, A. J. ; [et al.]

In: Other Sources

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Publication Date: 2011-08-24

Description: 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.

Keywords: Lunar and Planetary Science and Exploration

Type: Faraday discussions (ISSN 1359-6640); 109; 475-92

Format: text

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