Computer Science
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57..933d&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 57, no. 4, p. 933-938.
Computer Science
37
Allende Meteorite, Aromatic Compounds, Buckminsterfullerene, Carbonaceous Chondrites, Cyclic Hydrocarbons, Murchison Meteorite, Emission Spectra, Infrared Spectra, Interstellar Matter, Spectral Bands, Meteorites, Stony Meteorites, Chondrites, C Chondrites, Hydrocarbons, Murchison, Mass Spectrometry, Carbon 60, Buckminsterfullerene, Spectra, Samples, Meteorite, Laboratory Studies, Allende, Fullerenes, Abundance, Procedure, Deuterium, Coronene, Infrared, Wavelengths, Emissions, Cv3 Chondrites
Scientific paper
Analysis of interior samples of the Murchison meteorite by two routes yielded an upper limit of 2 ppb for its C60 content, as compared to parts per million levels for individual polycyclic aromatic hydrocarbons (PAHs ). Provided the samples contain an interstellar component, which is probable since Murchison hydrocarbons contain excess deuterium, this result argues against the ubiquitous presence of C60 in the interstellar medium. A possible explanation for the absence of C60 was found in experiments showing how PAHs replace fullerenes as stable end products when hydrogen is present during carbon condensation. As a secondary result we found high molecular weight PAHs in the Murchison and Allende meteorites. Coronene and its methyl derivatives are especially interesting since features in the coronene spectrum have been shown to match some of the unidentified interstellar infrared emission bands.
Chang Sandy
de Vries M. S.
Fleming Ronan
Golden W. G.
Hunziker H. E.
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