Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371l..81x&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 371, April 20, 1991, p. L81-L84.
Astronomy and Astrophysics
Astronomy
28
Cosmic Dust, Infrared Astronomy Satellite, Infrared Imagery, Interstellar Matter, Temperature Distribution, Temperature Measurement, Infrared Spectra, Laplace Transformation, Thermal Emission
Scientific paper
In attempting to analyze the four-band IRAS images of interstellar dust emission, it is found that an inversion theorem recently developed by Chen (1990) enables distribution of the dust to be determined as a function of temperature and thus the total dust column density, for each line of sight. The method and its application to a hypothetical IRAS data set created by assuming a power-law dust temperature distribution, which is characteristic of the actual IRAS data for the Monoceros R2 cloud, are reported. To use the method, the wavelength dependence of the dust emissivity is assumed and a simple function is fitted to the four intensity-wavelength data points. The method is shown to be very successful at retrieving the dust temperature distribution in this case and is expected to have wide applicability to astronomical problems of this type.
Goldsmith Paul F.
Xie Taoling
Zhou Weimin
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