Far-infrared observations of G351.6 - 1.3/G351.7 - 1.2 region

Details Far-infrared observations of G351.6 - 1.3/G351.7 - 1.2 region Far-infrared observations of G351.6 - 1.3/G351.7 - 1.2 region

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353..564g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 20, 1990, p. 564-569.

Computer Science

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4

Emission Spectra, H Ii Regions, Infrared Sources (Astronomy), Interstellar Matter, Molecular Clouds, Balloon Sounding, Far Infrared Radiation, Radiative Transfer

Scientific paper

An area of about 20 arcmin x 25 arcmin around the H II region-molecular cloud complexes G351.6 - 1.3 and G351.7 - 1.2 has been mapped in a 120 - 300 micron far-infrared band with a spatial resolution of about 1.5 arcmin. Besides the two main sources, five weaker sources have been seen. The IRAS two-dimensional COADD data of the same region at 60 microns and 100 microns have been deconvolved for comparison with the 150 micron intensity map. Combining all the available far-infrared measurements, dust temperature, optical depth, far-infrared luminosity, etc, have been derived for the individual sources in this complex. Spectra have been constructed for the two main sources using all available data. These have been compared with the results of radiation transfer calculations for a spherically symmetric model. Information has been derived on the nature of the dust and its distribution in the main source in G351.6 - 1.3. A mixture of graphite and silicate grains gives a good fit to the observed spectrum. The favored radial dust density distribution is uniform.

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