Chemistry in cometary comae
Faraday Discussions1998Vol. 109(109), pp. 475–492
Citations Over TimeTop 10% of 1998 papers
William M. Irvine, J. E. Dickens, A. J. Lovell, F. P. Schloerb, M. Senay, Edwin A. Bergin, David 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.
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