Optical properties of glassy bronzite and the interstellar silicate bands

Details Optical properties of glassy bronzite and the interstellar silicate bands Optical properties of glassy bronzite and the interstellar silicate bands

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...198..223d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 198, no. 1-2, June 1988, p. 223-232.

Astronomy and Astrophysics

Astrophysics

33

Infrared Spectra, Interplanetary Dust, Interstellar Matter, Optical Properties, Silicates, Stellar Envelopes, Absorptivity, Amorphous Materials, Glass, Particle Size Distribution, Pyroxenes, Refractivity

Scientific paper

A glassy substance was produced from a sample of bronzite, an abundant pyroxene in meteorites and interplanetary dust particles. The complex index of refraction has been determined from transmission spectra of submicrometre-sized particles embedded in KBr by means of the dispersion theory in the wavelength range 7 - 40 μm. Efficiency factors for absorption and extinction are computed with the Mie theory. Comparison with the observations showed that glassy bronzite is an excellent candidate for modelling the mid-infrared spectra of infrared sources associated with evolutionarily young objects, e.g., T Tauri stars and BN objects.

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