The FIR Emission of Dust Particles around C-Rich IRAS Sources

Details The FIR Emission of Dust Particles around C-Rich IRAS Sources The FIR Emission of Dust Particles around C-Rich IRAS Sources

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..227b&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 227-231

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

The spectra of 26 IRAS sources have been fitted using experimental optical data obtained in our laboratory for different types of carbon and silicon carbide (SiC) submicronic particles. Laboratory data are the main input for a radiative transfer model, which, taking into account several important parameters of the circumstellar matter and of the central star, evaluates the temperature gradient across the envelope and hence the emission best-fit spectrum. In this way it has been possible to fit, with good accuracy, most of the examined IRAS spectra in the range 8 - 100µm. The sources have been chosen among those showing SiC feature around 11µm and the best fits have been obtained by carefully assessing the amount and the type (α &β) of SiC particles present in the grain mixtures.

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