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Discovery of a narrow line quasarA stellar object is reported which, while having X-ray and optical luminosities typical of quasars, has narrow permitted and forbidden emission lines over the observed spectral range. The narrow-line spectrum is high-excitation, the Balmer lines seem to be recombinational, and a redder optical spectrum than that of most quasars is exhibited, despite detection as a weak radio source. The object does not conform to the relationships between H-beta parameters and X-ray flux previously claimed for a large sample of the active galactic nuclei. Because reddish quasars with narrow lines, such as the object identified, may not be found by the standard techniques for the discovery of quasars, the object may be a prototype of a new class of quasars analogous to high-luminosity Seyfert type 2 galaxies. It is suggested that these objects cannot comprise more than 10% of all quasars.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Stocke, J.
(Arizona Univ. Tucson, AZ, United States)
Liebert, J.
(Steward Observatory Tucson, AZ, United States)
Maccacaro, T.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA; CNR, Istituto di Radioastronomia Bologna, Italy)
Griffiths, R. E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Steiner, J. E.
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: Astrophysical Journal
Subject Category
Accession Number
Funding Number(s)
Distribution Limits

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