Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328l..75w&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 328, May 15, 1988, p. L75-L79.
Astronomy and Astrophysics
Astrophysics
30
Carbonaceous Chondrites, Infrared Spectra, Meteoritic Composition, Organic Compounds, Aromatic Compounds, Emission Spectra, Interstellar Matter, Meteorites, Organic Material, Solubility, Orgueil, Stony Meteorites, Carbonaceous Chondrites, Wavelengths, Infrared, Samples, Meteorite, Deuterium, Abundance, Laboratory Studies, Hydrocarbons, Composition, Origin, Spectrometry, Residue, Procedure, Comparisons, Nmr Methods, Spectra, Ci Chondrites, Carbon 13, Isotopes
Scientific paper
Infrared spectra have been obtained of the acid insoluble residue, residue after heating in vacuum, and condensate of the Orgueil carbonaceous chondrite using an FTIR spectrometer. Bulk acid insoluble residue was pressed into KBr pellets and also heated under high vacuum to sublimate a volatile component onto KBr disks. The remaining nonvolatile organic component of the meteorite from such evaporations pressed into KBr pellets exhibits a spectral signature similar to that observed in emission from the Orion Nebula and found in Raman spectra of interplanetary dust particles. It also has an 11.3 micron band indicating polycyclic aromatic hydrocarbons (PAHs) having single hydrogens per peripheral aromatic ring. It is concluded that the nonvolatile material is similar to interstellar PAHs since the observed 11.3 micron unidentified infrared emission suggests interstellar PAHs have single hydrogens per peripheral aromatic ring.
Cronin John R.
Flickinger Gregory C.
Wdowiak Thomas J.
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