Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278l..59h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 278, March 1, 1984, p. L59-L62.
Astronomy and Astrophysics
Astronomy
81
Andromeda Galaxy, Astronomical Maps, Galactic Radiation, Infrared Astronomy, Spaceborne Astronomy, Emission Spectra, Hydrogen Clouds, Infrared Astronomy Satellite, Spectral Bands
Scientific paper
Maps of M31 have been obtained at wavelengths of 12, 25, 60, and 100 microns. Emission is detected from the center and from a ring of 50 arcmin radius. The ring is that also seen in H I, in H II, and in radio continuum radiation. The spectrum of the central emission suggests a hotter dust temperature than in the ring. M31 is a weak infrared source, the radiation measured longward of 12 microns being only 3 percent of its total luminosity. The two closest companion galaxies, M32 and NGC 205, have also been detected.
Baud B.
Boggess N.
Clegg Peter E.
de Jong Teije
Habing Harm J.
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