Associations between quasi-stellar objects and galaxies

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Astrophysical Journal, Supplement Series; (USA)

DOI:https://doi.org/10.1086/191514· OSTI ID:6204865

Burbidge, G; Hewitt, A; Narlikar, J V; Gupta, P DAS ^[1]

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1. California Univ., La Jolla (USA) Tata Institute of Fundamental Research, Bombay (India) Poona Univ. (India)

A table is presented here listing all close pairs of QSOs and galaxies that were found in a computer-aided search of catalogs of QSOs and bright galaxies and an extensive search of the literature. There is a large excess of pairs with separations of 2 arcmin or less, or about 60 kpc, over the numbers expected if the configurations were accidental. The angular separation for 392 pairs adds to the evidence for physical association, and it is shown that selection effects are not important. A general rule is stated that QSOs tend to lie in the vicinity of normal galaxies much more often than is expected by chance whether or not the galaxies and the QSOs have the same redshifts. It is emphasized that this rule cannot be explained in terms of gravitational microlensing, and it is concluded that some part of the redshift of all classes of active nuclei is not associated with the expansion of the universe. 120 refs.

• OSTI ID: 6204865
• Journal Information: Astrophysical Journal, Supplement Series; (USA), Journal Name: Astrophysical Journal, Supplement Series; (USA) Vol. 74; ISSN APJSA; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATALOGS
COORDINATES
COSMIC RADIO SOURCES
DOCUMENT TYPES
EXPANSION
GALAXIES
GALAXY CLUSTERS
GRAVITATIONAL LENSES
LENSES
QUASARS
RED SHIFT
TABLES