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The remarkable infrared galaxy Arp 220 = IC 4553IRAS observations of the peculiar galaxy Arp 220 = IC 4553 show that it is extremely luminous in the far-infrared, with a total luminosity of 2 x 10 to the 12th solar luminosities. The infrared-to-blue luminosity ratio of this galaxy is about 80, which is the largest value of the ratio for galaxies in the UGC catalog, and places it in the range of the 'unidentified' infrared sources recently reported by Houck et al. in the IRAS all-sky survey. Other observations of Arp 220, combined with the luminosity in the infrared, allow either a Seyfert-like or starburst origin for this luminosity.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Soifer, B. T.
(California Inst. of Tech. Pasadena, CA, United States)
Neugebauer, G.
(California Institute of Technology Pasadena, CA, United States)
Helou, G.
(California Inst. of Tech. Pasadena, CA, United States)
Lonsdale, C. J.
(California Inst. of Tech. Pasadena, CA, United States)
Hacking, P.
(California Inst. of Tech. Pasadena, CA, United States)
Rice, W.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Houck, J. R.
(Cornell University Ithaca, NY, United States)
Low, F. J.
(Arizona, University Tucson, AZ, United States)
Rowan-Robinson, M.
(Queen Mary College London, United Kingdom)
Date Acquired
August 12, 2013
Publication Date
August 1, 1984
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 283
ISSN: 0004-637X
Subject Category
Accession Number
Distribution Limits

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