| Literature DB >> 9809016 |
W M Irvine1, J E Dickens, A J Lovell, F P Schloerb, M Senay, E A Bergin, D Jewitt, H E Matthews.
Abstract
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.Entities:
Keywords: NASA Discipline Exobiology; Non-NASA Center
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Year: 1998 PMID： 9809016 DOI： 10.1039/a709289j
Source DB: PubMed Journal: Faraday Discuss ISSN： 1359-6640 Impact factor: 4.008