Far-infrared survey of the galactic disc in the Southern Hemisphere

Details Far-infrared survey of the galactic disc in the Southern Hemisphere Far-infrared survey of the galactic disc in the Southern Hemisphere

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...137....1c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 137, no. 1, Aug. 1984, p. 1-5.

Astronomy and Astrophysics

Astrophysics

28

Astronomical Spectroscopy, Galactic Structure, Infrared Spectra, Milky Way Galaxy, Emission Spectra, Far Infrared Radiation, Gas Density, H Ii Regions, Molecular Clouds, Spatial Distribution, Spiral Galaxies

Scientific paper

The authors present a FIR survey (114 - 196 μm) of the galactic disc made from a balloon borne instrument launched in Australia. The emission of the galactic disc has been measured from l = 250° to l = 20°. This emission appears as an intense ridge with a typical FIR brightness of 2×10-5W m-2 sterad-1 with bright spots superimposed on an unresolved component. The authors have built a spiral structure model of the FIR source function spatial distribution which represents the large scale emission of the Galaxy. It is suggested that the FIR emission could be due to very large complexes of H II regions giant molecular clouds and lower density gas which are distributed along galactic spiral arms.

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