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

Journal Article · Sun Jul 01 00:00:00 EDT 1990 · Icarus (International Journal of the Solar System); (USA)

DOI:https://doi.org/10.1016/0019-1035(90)90208-Q· OSTI ID:6595848

Colangeli, L; Bussoletti, E; Papoular, R; Mennella, V ^[1]

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1. Cassino Universita (Italy) Istituto Universitario Navale, Naples (Italy) CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette (France) Osservatorio Astronomico di Capodimonte, Naples (Italy)

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. 46 refs.

• OSTI ID: 6595848
• Journal Information: Icarus (International Journal of the Solar System); (USA), Vol. 86; ISSN 0019-1035
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HALLEY COMET
INFRARED SPECTRA
AMORPHOUS STATE
AROMATICS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
HYDROCARBONS
SIMULATION
VEGA SPACE PROBES
COMETS
MATERIALS
ORGANIC COMPOUNDS
SPACE VEHICLES
SPECTRA
VEHICLES
640107* - Astrophysics & Cosmology- Planetary Phenomena