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IRAS observations of Shapley-Ames galaxiesA preliminary discussion of the infrared properties of a representative subsample of galaxies in the Revised Shapley-Ames Catalog (B less than about 13 mag) is presented. Of the 165 galaxies in the sample, 108 predominantly spiral galaxies, are detected in the infrared by IRAS. None of the elliptical galaxies and only about 25 percent of the lenticular galaxies scanned were detected. The range of infrared-to-blue luminosity ratios, a measure of the infrared excess of galaxies, is large, varying from roughly 0.1 to roughly 5. The data suggest that weakly infrared emitting galaxies are cool (100-60 micron color temperatures of about 25 K), while the more infrared luminous ones tend to be warmer (about 50 K). The rate of star formation in barred spiral galaxies is apparently higher than in normal spirals. About 1 solar mass/year of interstellar matter is converted into massive stars in the typical spiral galaxy.
Document ID
19840044928
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
De Jong, T.
(Amsterdam, Universiteit Amsterdam, Netherlands)
Clegg, P. E.
(Amsterdam Univ. Netherlands)
Rowan-Robinson, M.
(Queen Mary College London, United Kingdom)
Soifer, B. T.
(California Institute of Technology Pasadena, CA, United States)
Habing, H. J.
(Leiden, Rijksuniversiteit, Sterrewacht Leiden, Netherlands)
Houck, J. R.
(Cornell University Ithaca, NY, United States)
Aumann, H. H.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Raimond, E.
(Dwingeloo Radiosterrewacht, Dwingeloo, Netherlands)
Date Acquired
August 12, 2013
Publication Date
March 1, 1984
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 278
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A27715
Distribution Limits
Public
Copyright
Other

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