The organic component of interstellar grains

Details The organic component of interstellar grains The organic component of interstellar grains

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986inpr.conf..143s&link_type=abstract

In NASA. Ames Research Center Summer School on Interstellar Processes: Abstracts of Contributed Papers p 143-144 (SEE N87-15043

Computer Science

Absorption Spectra, Chemical Composition, Galactic Nuclei, Interstellar Matter, Molecular Clouds, Abundance, Chemical Bonds, Dust, Grain Size, Hydrocarbons, Infrared Spectra

Scientific paper

The 3.4 micron absorption feature observed in the spectrum of a number of Galactic Center (GC) sources indicates the presence of organic molecules in the interstellar medium. It is ascribed to the C-H stretch vibration of tetrahedrally bonded carbon. From the observed features due to the interstellar organic material, an estimate was made of its composition and abundance. The ratio of the number of C-H groups of tetrahedrally to those of trigonally bonded carbon was 1.5, the cosmic abundance of carbon was .00037, and the depth of the silicate absorption toward the GC was taken equal to 3.6.

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