Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302..632t&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 15, 1986, p. 632-639. Research supported by the Royal Observator
Astronomy and Astrophysics
Astronomy
13
Galactic Nuclei, Galactic Radiation, Infrared Astronomy, Star Formation, Early Stars, Main Sequence Stars, Radio Spectra, Red Giant Stars, Spectral Energy Distribution, Star Formation Rate, Starburst Galaxies
Scientific paper
Low surface brightness 10 micron emission has been detected in M51 extending more than 1 arcmin, or 3 kpc, in RA. The emission has roughly uniform brightness and originates from dust in a region that is prominent visually and centered on the nucleus. Complementary near-infrared scans, which are dominated by the light from red stars, also show notable structure from hot dust. The dust is heated predominately by young stars, although a nonthermal source and, to a lesser extent, red stars may power the emission at the nucleus. Simple starburst models imply that the star formation rate per square parsec in the extended infrared-disk is at least two to three orders of magnitude higher than in the solar neighborhood.
Decher Rudolf
Gatley Ian
Telesco Charles M.
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