Extinction coefficients of amorphous carbon grains from 2100 A to 340 microns

Details Extinction coefficients of amorphous carbon grains from 2100 A to 340 microns Extinction coefficients of amorphous carbon grains from 2100 A to 340 microns

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..67..495k&link_type=abstract

Astrophysics and Space Science, vol. 67, no. 2, Feb. 1980, p. 495-502.

Astronomy and Astrophysics

Astrophysics

112

Amorphous Materials, Carbon, Infrared Absorption, Interstellar Extinction, Interstellar Matter, Electron Microscopy, Far Infrared Radiation, Graphite, Microstructure, Optical Properties

Scientific paper

Extinction measurements were made for three kinds of amorphous carbon grains in the range 2100 A-340 microns. Absolute values of extinction coefficients from different sources vary by almost constant factors. Wavelength dependences of extinction curves show an inverse or less steep fall off, against an inverse-squared or steeper fall off for graphite grains. Small humps are found around 6.3, 8, 13.3 and 90 microns, although their origins are not yet clear. The infrared properties of amorphous carbon grains suggest that they could supply a significant amount of far-infrared emission noted in recent astronomical observations.

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