A companion quasar to 3C345

Although some quasistellar objects (QSOs) are known to be members of small groups of galaxies (see refs 1–3), there is no known case of a QSO in a rich cluster of galaxies 4 . Whether this has important implications for the nature of QSOs, or is simply a reflection of the difficulty of observing hig...

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Bibliographic Details
Published in:Nature (London) 1981-04, Vol.290 (5806), p.480-481
Main Authors: Margon, Bruce, Chanan, Gary A, Downes, Ronald A
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:Although some quasistellar objects (QSOs) are known to be members of small groups of galaxies (see refs 1–3), there is no known case of a QSO in a rich cluster of galaxies 4 . Whether this has important implications for the nature of QSOs, or is simply a reflection of the difficulty of observing high-redshift clusters, is unclear. Here we report the discovery of a new QSO which provides perhaps the strongest evidence to date for quasar membership in a rich cluster.
ISSN:0028-0836
1476-4687
DOI:10.1038/290480a0