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Warm ultraluminous galaxies in the IRAS survey - The transition from galaxy to quasar?

Sanders, D. B. and Soifer, B. T. and Elias, J. H. and Neugebauer, G. and Matthews, K. (1988) Warm ultraluminous galaxies in the IRAS survey - The transition from galaxy to quasar? Astrophysical Journal, 328 (2). L35-L39. ISSN 0004-637X. http://resolver.caltech.edu/CaltechAUTHORS:20170301-101508395

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Abstract

Of 90 extragalactic objects chosen from the IRAS catalog on the basis of brightness at 60 mum and "warm" infrared color [f_ ν(25 µm)/f_ ν(60 µm) >0.2], 12 have luminosities characteristic of quasars. These 12 ultraluminous objects have Seyfert spectra, and nine of them show morphological evidence for recent collisions or mergers - they plausibly represent a transition stage between cooler ultraluminous infrared galaxies and optical quasars.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1086/185155DOIArticle
http://adsabs.harvard.edu/doi/10.1086/185155ADSArticle
Additional Information:© 1988 American Astronomical Society. Received 1987 December 29; accepted 1988 February 12. We thank our night assistants at Palomar, Juan Carasco and Skip Staples, for assistance in obtaining the observations. G. N., D. B. S., and B. T. S. were supported in part by the IRAS extended mission program. Ground-based astronomy at Caltech is supported by a grant from the NSF. The Palomar 1.5 m telescope is operated jointly by the California Institute of Technology and the Carnegie Institution of Washington.
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Subject Keywords:galaxies: general - infrared: general - infrared: sources - quasars
Record Number:CaltechAUTHORS:20170301-101508395
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170301-101508395
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74635
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Mar 2017 18:34
Last Modified:01 Mar 2017 18:34

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