Interstellar extinction at 10 - 20 μm.

Details Interstellar extinction at 10 - 20 μm. Interstellar extinction at 10 - 20 μm.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iaus..135p.523s&link_type=abstract

IAU Symposium No. 135: Interstellar dust: contributed papers, p. 523 - 526

Physics

Interstellar Extinction: H Ii Regions, Interstellar Extinction: Infrared Extinction

Scientific paper

The interstellar extinction function is not well determined in the infrared. Typically, for studies of H II regions and molecular clouds, one assumes that the extinction curve has the same shape as the dust emission in the Trapezium of the Orion Nebula from 8 to 13 μm. The authors have analysed the IRAS LRS spectra of 117 stars of excellent signal/noise with optically thin silicate dust shells. They subtracted the stellar continua (assumed to be a cool black body), and fit the resulting dust shell spectra with simple models assuming uniform mass loss and dust temperature as a function of distance from the star, calculated using the optical constants for silicates of Draine.

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