Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343..672f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 343, Aug. 15, 1989, p. 672-677.
Astronomy and Astrophysics
Astronomy
23
Infrared Astronomy Satellite, Seyfert Galaxies, Energy Distribution, Galactic Nuclei, Infrared Photometry, Interstellar Matter, Luminosity
Scientific paper
The properties of IRAS 20460+1925, which is identified with a Seyfert 2 galaxy at z = 0.181, are described. The object is dominated by an unresolved nucleus embedded in a region of extended emission with a diameter of 35 kpc. The bolometric luminosity of the galaxy is 7 x 10 to the 12 solar luminosities, and the FWHM of the forbidden and permitted lines is between 1700 and 2100 km/s in the rest frame. The 0.5-3.5 micron energy distribution of IRAS 20460+1925 is among the reddest known for any type of galaxy, while its 12-100 micron flux distribution is among the flattest known for an extragalactic source. There is no evidence for starlight in its spectrum. The reddened hot thermal and nonthermal emission from the nucleus dominates at shorter wavelengths while hot dust contributes to the longer wavelengths.
Frogel Jay. A.
Gillett Fred C.
Terndrup Donald M.
Vader Patricia J.
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