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- W2006869439 abstract "view Abstract Citations (3568) References (88) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Optical Properties of Interstellar Graphite and Silicate Grains Draine, B. T. ; Lee, H. M. Abstract The dielectric functions for graphite and astronomical silicate material are computed using available laboratory and astronomical data. It is noted that the magnetic dipole contribution to absorption in the infrared wavelengths can be important for conducting particles such as graphite. Formulas are given for evaluating electric and magnetic dipole cross-sections for small particles. Absorption cross-sections are evaluated for graphite and silicate particles with sizes between 0.003 and 1.0 microns, and wavelengths from 300 A to 1000 microns. On the basis of polarization profiles computed for both prolate and oblate graphite-silicate spheroids, it is concluded that interstellar silicate grain are predominantly oblate. Extinction curves are calculated for Mathis-Rumpl-Nordsieck graphite-silicate grain mixtures and are compared to observations. The model is found to be in good agreement with available infrared observations. Publication: The Astrophysical Journal Pub Date: October 1984 DOI: 10.1086/162480 Bibcode: 1984ApJ...285...89D Keywords: Granular Materials; Graphite; Interstellar Matter; Optical Properties; Silicates; Absorption Cross Sections; Infrared Astronomy; Opacity; Particle Interactions; Scattering Cross Sections; Astrophysics full text sources ADS | data products SIMBAD (6) Related Materials (1) Erratum: 1987ApJ...318..485D" @default.
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- W2006869439 date "1984-10-01" @default.
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- W2006869439 title "Optical properties of interstellar graphite and silicate grains" @default.
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