Faint quasi-stellar-object candidates in selected areas 28 and 68 identified from multicolor photometry

Journal Article · Sat Apr 01 00:00:00 EST 1989 · Publications of the Astronomical Society of the Pacific; (USA)

DOI:https://doi.org/10.1086/132440· OSTI ID:5582617

Shields, J C; Koo, D C; Kron, R C ^[1]

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1. Space Telescope Science Institute, Baltimore, MD (USA)

Forty-five QSO candidates over a total area of 0.53 square degree in two fields at high Galactic latitudes have been identified. These candidates reached B of about 21.5 for field Lynx.3 in SA 28 and B of about 22 for field SA68.2, and were selected from a subset of objects in catalogs generated from multicolor photometry (UBV) of deep Kitt Peak 4-m plates with limits of B of about 24. This subset consists of all objects which appeared stellar-like in size but which did not have the UBV colors of common Galactic stars. Besides several probable high-redshift QSOs, this study yields faint QSO counts consistent with those from other surveys, and thus provides further support to models that include mainly the luminosity evolution of QSOs. 29 refs.

• OSTI ID: 5582617
• Journal Information: Publications of the Astronomical Society of the Pacific; (USA), Vol. 101; ISSN 0004-6280
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
QUASARS
IDENTIFICATION SYSTEMS
CATALOGS
LUMINOSITY
MILKY WAY
PHOTOMETRY
RED SHIFT
COSMIC RADIO SOURCES
DOCUMENT TYPES
GALAXIES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources