The identification of H3S(+) with the ion of mass per charge (m/q) 35 observed in the coma of Comet Halley

Details The identification of H3S(+) with the ion of mass per charge (m/q) 35 observed in the coma of Comet Halley The identification of H3S(+) with the ion of mass per charge (m/q) 35 observed in the coma of Comet Halley

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...352l..17m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 352, March 20, 1990, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

25

Comet Heads, Halley'S Comet, Heavy Ions, Mass Spectra, Organic Sulfur Compounds, Abundance, Energy Distribution, Giotto Mission, Positive Ions, Comets, Halley, Ions, Comae, Spectra, Picca Instrument, Chemistry, Spacecraft Observations, Giotto Mission, Parent Molecules, Ionopause, Origin, Source, Production Rate, Abundance, Molecular Processes, Hydrogen Sulfide

Scientific paper

A sharp peak in the mass spectrum at 35 amu is observed by the heavy ion analyzer on board the Giotto spacecraft just inside the ionopause. This peak is identified with H3S(+) and it is argued that the dominant source of its likely parent molecule (H2S) is the observed distributed source of circumnuclear dust, rather than the central nucleus. In this case, the total production rate of H2S is more than about 0.5 percent that of the dominant cometary molecule H2O.

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