Far-infrared observations of G351. 6 - 1. 3/G351. 7 - 1. 2 region

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168644· OSTI ID:6770005

Ghosh, S K; Iyengar, K V.K.; Rengarajan, T N; Tandon, S N; Verma, R P ^[1]

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1. Tata Institute of Fundamental Research, Bombay (India)

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. 30 refs.

• OSTI ID: 6770005
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 353; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRSHIPS
BALLOONS
COMPARATIVE EVALUATIONS
COSMIC DUST
COSMIC GASES
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
DATA PROCESSING
DUSTS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
FAR INFRARED RADIATION
FLUIDS
GASES
H2 REGIONS
INFRARED RADIATION
INTERSTELLAR SPACE
LUMINOSITY
MOLECULES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PROCESSING
RADIATION TRANSPORT
RADIATIONS
SPACE
SPECTRA