The organic matter of Comet Halley as inferred by joint gas phase and solid phase analyses

Details The organic matter of Comet Halley as inferred by joint gas phase and solid phase analyses The organic matter of Comet Halley as inferred by joint gas phase and solid phase analyses

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ssrv...56..167k&link_type=abstract

(Analysis of samples from solar system bodies with emphasis on existing and emerging technologies; Proceedings of the Internatio

Computer Science

Emerging Technologies

19

Chemical Analysis, Halley'S Comet, Organic Compounds, Solid Phases, Vapor Phases, Chemical Composition, Evolution (Development), Giotto Mission, Interplanetary Dust, Comets, Halley, Organic Material, Gas Phase, Solid Phase, Analysis, Spacecraft Observations, Giotto Mission, Picca Instrument, Ions, Comae, Puma Instrument, Vega 1 Mission, Dust, Parent Material, Origin, Polymers, Chemical Reactions, Exogenic Effects, Formation, Volatility, Vapor Pressure, Condensation

Scientific paper

During encounters with Comet Halley, the experiment PICCA onboard Giotto measured the gas-phase organic ion composition of the coma, and the experiment PUMA onboard Vega-1 measured the dust composition. Joining both results gives a consistent picture of the parent organic matter from which dust and gas is produced: a complex unsaturated polycondensate, which splits during coma formation into the more refractory C=C,C-N-containing dust part and the more volatile C=C,C-O-containing gas part. The responsible exothermal chemical reactions, which are triggered by sunlight, may play a major role in the dynamics of coma formation.

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