Computer Science
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993sci...260...64a&link_type=abstract
Science (ISSN 0036-8075), vol. 260, no. 5104, p. 64-66.
Computer Science
64
Diamonds, Infrared Spectra, Interstellar Matter, Molecular Clouds, Molecular Structure, Protostars, Stellar Envelopes
Scientific paper
Observations of a newly discovered infrared C-H stretching band indicate that interstellar diamond-like material appears to be characteristic of dense clouds. In sharp contrast, the spectral signature of dust in the diffuse interstellar medium is dominated by -CH2- and -CH3 groups. This dichotomy in the aliphatic organic component between the dense and diffuse media challenges standard assumptions about the processes occurring in, and interactions between, these two media. The ubiquity of this interstellar diamond-like material rules out models for meteoritic diamond formation in unusual circumstellar environments and implies that the formation of the diamond-like material is associated with common interstellar processes or stellar types.
Allamandola Louis J.
Herbst Thomas M.
Sandford Scott A.
Tielens Alexander G. G. M.
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