Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....83...22v&link_type=abstract
Astronomy and Astrophysics, vol. 83, no. 1-2, Mar. 1980, p. 22-25.
Astronomy and Astrophysics
Astrophysics
7
Continuous Spectra, Cosmic Dust, Far Infrared Radiation, Galactic Radiation, Galactic Structure, Interstellar Matter, H Ii Regions, Lyman Spectra, Microwave Spectra, Molecular Gases
Scientific paper
The galactic plane has been scanned over one degree in the far infrared using an airborne telescope. A close correlation between the distribution of far infrared and radio-continuum emission is observed. The total infrared energy is between one and two orders of magnitude higher than that expected from the total energy available in Ly-alpha photons deduced from the radio continuum. Two explanations of this far infrared excess are considered; namely, H II regions with large amounts of dust, such that most grains are heated by direct absorption of Ly-alpha and Ly-c photons, or, more likely, H II regions associated with molecular clouds heated by a number of cooler stars present in the medium.
de Muizon M.
Léna Pierre
Nicollier Cl.
Rouan Daniel
Viallefond Francois
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