Carbonaceous materials in cometary environments - The case of the 3-4 micron bands

Details Carbonaceous materials in cometary environments - The case of the 3-4 micron bands Carbonaceous materials in cometary environments - The case of the 3-4 micron bands

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992adspr..12...43c&link_type=abstract

(Life sciences and space research XXIV/3/ - Planetary biology and origins of life; Proceedings of the Topical Meeting of the Int

Biology

Carbonaceous Materials, Cometary Atmospheres, Hydrocarbons, Near Infrared Radiation, Amorphous Materials, Aromatic Compounds, Emission Spectra, Optical Properties, Spectrum Analysis, Temperature Dependence

Scientific paper

A simulation is presented of cometary spectra between 3 and 4 microns performed by using the optical properties of various carbon-based materials measured at different temperatures in the range 300-520 K. Laboratory data obtained for hydrogeneted amorphous carbon (HAC) grains and three kinds of polycyclic aromatic hydrocarbons are employed for the computations. All these materials show significant features in the near-IR region; however, only the synthetic spectra obtained from HAC grains show a satisfactory agreement with the profile of the cometary bands.

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