Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apjs...54..495g&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 54, April 1984, p. 495-512.
Astronomy and Astrophysics
Astrophysics
42
Astronomical Catalogs, Astronomical Coordinates, Astronomical Photography, Galactic Clusters, Quasars, Red Shift, Intergalactic Media, Magnitude
Scientific paper
Images in Gunn r (6500 + or - 450 A) of fields around 108 bright quasars have been obtained using the SIT-vidicon camera on the Palomar 1.52 m telescope for the purpose of studying the global environments of quasars. The sample consists of quasars from complete optical and radio surveys, with redshifts ranging from 0.05 to over 2.0. A catalog of the positional offsets from the quasar, the magnitudes, and the classifications (into stars or galaxies) of the detected objects is presented. In addition, control fields 1 deg N of each quasar, for the purpose of background galaxy counting, were also observed. The background galaxy counts derived from the control fields, covering a total area of 0.226 sq deg, are in good agreement with the counts obtained by Kron and Sebok.
Green Richard F.
Yee Howard K. C.
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