Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.128....5k&link_type=abstract
(Universitaets-Sternwarte Jena, Jena Workshop on the Role of Dust in Dense Regions of Interstellar Matter, Georgenthal, East Ger
Astronomy and Astrophysics
Astronomy
Cosmic Dust, Infrared Astronomy, Interstellar Extinction, Interstellar Matter, Polarimetry, Emission Spectra, Microparticles, Radiative Transfer, Silicates
Scientific paper
The authors critically discuss the two major models for interstellar dust grains developed by Greenberg and Mathis and their co-workers. So far, knowledge about the dust has been obtained mainly from extinction and polarizaton measurements in the UV, visual and near IR. Analysis of dust emission at longer wavelengths generally requires an evaluation of the radiative transfer. Such a procedure is necessary to assess optical grain properties at long wavelengths and also to interpret the emission from the different kinds of IR objects. The 10 μm silicate resonance and the submm dust absorptivity are presented as two examples. The authors then briefly summarize the implications which follow from the existence of extremely small dust grains.
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