Si3N4 emissivity and the unidentified infrared bands.

Details Si3N4 emissivity and the unidentified infrared bands. Si3N4 emissivity and the unidentified infrared bands.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iaus..135p.157r&link_type=abstract

IAU Symposium No. 135: Interstellar dust: contributed papers, p. 157 - 162

Astronomy and Astrophysics

Astronomy

Interstellar Dust: Infrared Spectroscopy, Interplanetary Dust: Infrared Spectroscopy, Nova Aquilae 1982

Scientific paper

Infrared spectroscopy of warm (about 150 - 750K), dusty astronomical sources has revealed a structured emission spectrum which can be diagnostic of the composition, temperature, and in some cases, even size and shape of the grains giving rise to the observed emission. The successful identifications of silicate emission in oxygen-rich objects and SiC in carbon-rich objects are two examples of this type of analysis. However, it was pointed out that some astronomical sources appear to contain a different type of dust which results in a qualitatively different spectral shape in the 8 - 13 micron region. This paper presents part of an ongoing effort in the laboratory to obtain data for proposed or likely celestial dust constituents.

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