Simulation of cometary infrared spectra using laboratory extinction data of carbonaceous materials

Details Simulation of cometary infrared spectra using laboratory extinction data of carbonaceous materials Simulation of cometary infrared spectra using laboratory extinction data of carbonaceous materials

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...86..198c&link_type=abstract

Icarus (ISSN 0019-1035), vol. 86, July 1990, p. 198-207. Research supported by MPI.

Physics

1

Carbonaceous Materials, Halley'S Comet, Infrared Spectra, Aliphatic Hydrocarbons, Aromatic Compounds, Giotto Mission, Simulation, Vega Project, Vitreous Materials, Comets, Simulations, Laboratory Studies, Infrared, Wavelengths, Spectra, Extinction, Carbonaceous Material, Halley, Carbon, Amorphous Material, Vitrinite, Comparisons, Particles, Physical Properties, Structure, Spacecraft Observations

Scientific paper

Laboratory observations of the behavior of hydrogenated amorphous carbon (HAC) and the vitreous homogeneous organic compound vitrine may furnish a key to the identification of the 3.3-3.4 micron bands encountered in Comet Halley spectra between 3 and 4 microns. When the HAC annealing temperature rises, or when the rank of vitrines increases, a similar change occurs in the structure of these carbonaceous materials from a prevalent aliphatic to a dominant aromatic character. In situ mass spectrometry investigations of CHON particles conducted by Giotto and both Vega 1 and 2 appear to confirm the similarity of physical structure between carbonaceous particles and those observed in the laboratory.

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