The infrared signature of graphite grains

Details The infrared signature of graphite grains The infrared signature of graphite grains

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277l..71d&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 277, Feb. 15, 1984, p. L71-L74. Research supported

Astronomy and Astrophysics

Astrophysics

40

Astronomical Spectroscopy, Carbon Stars, Graphite, Infrared Signatures, Interstellar Matter, Stellar Envelopes, Cosmic Dust, Optical Properties, Raman Spectra, Stellar Spectrophotometry

Scientific paper

A method for spectroscopically detecting interstellar graphite grains is proposed. If pure crystalline graphite grains constitute an appreciable portion of the interstellar grain mixture, they will produce a spectral feature at 11.52 microns which may be detected in either emission or absorption along suitable lines of sight. Absence of this feature in IRC+10216 indicates that crystalline graphite is not a major constituent of that object's dust shell. Laboratory measurements to confirm the presence of this feature in small particles or in poorly crystallized forms of graphite would be highly useful.

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