Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...236..441b&link_type=abstract
Astrophysical Journal, Part 1, vol. 236, Mar. 1, 1980, p. 441-447.
Astronomy and Astrophysics
Astrophysics
98
Galactic Nuclei, Infrared Spectra, Interstellar Matter, Spiral Galaxies, Star Formation, Stellar Structure, Extragalactic Radio Sources, Infrared Radiation, Luminosity, Radio Emission, Spectrophotometry
Scientific paper
The face-on Scd galaxy IC 342 has been studied at infrared wavelengths between 1.2 μm and 250 μm and at centimeter radio wavelengths. At 10 μm the nucleus is bright and extended on a scale of 200 pc, with a double structure unlike that of the stars seen at 2 μm. The infrared emission between 8 and 250 μm probably arises from heated dust grains in star formation regions in the disk of the galaxy. The radio emission comes from a region with many of the same spatial features as the 10 μm source; it appears to include both thermal and nonthermal sources. IC 342 is intermediate in luminosity between the Galaxy and NGC 253; the difference can probably be accounted for by a difference in the current rate of star formation at their centers.
Becklin Eric E.
Gatley Ian
Matthews Keith
Neugebauer Gernot
Sellgren Kris
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