On the possible detection of organic dust-borne C3H(+) ions in the coma of Comet Halley

Details On the possible detection of organic dust-borne C3H(+) ions in the coma of Comet Halley On the possible detection of organic dust-borne C3H(+) ions in the coma of Comet Halley

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343l..77m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 343, Aug. 15, 1989, p. L77-L79. Research supported by the Max-Pla

Astronomy and Astrophysics

Astrophysics

14

Cometary Atmospheres, Cosmochemistry, Halley'S Comet, Molecular Ions, Propyl Compounds, Chemical Composition, Giotto Mission, Interplanetary Medium, Mass Spectra, Comets, Halley, Organic Material, Ions, Comae, Spacecraft Observations, Giotto Mission, Picca Instrument, Source, Origin, C3H Radical, Dust, Chon Particles, Parent Material, Molecular Processes

Scientific paper

The heavy ion analyzer (PICCA) on board the Giotto spacecraft was used to determine the composition of positively charged ions in the environment of Comet Halley. Here it is argued that a distinct peak at 37 amu, observed in the mass spectrum inside the ionopause, is due to C3H(+). It is further argued that the dominant source of this ion, as well as the earlier identified ion (C3H3(+) at 39 amu), is not the cometary nucleus but is rather the circum-nuclear halo of the so-called CHON dust particles observed at the comet.

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