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The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later
Author(s) -
R. L. White,
R. H. Becker,
Michael D. Gregg,
S. A. LaurentMuehleisen,
M. S. Brotherton,
Chris Impey,
C. E. Petry,
Craig B. Foltz,
Frederic H. Chaffee,
Gordon T. Richards,
W. R. Oegerle,
D. J. Helfand,
R. G. McMahon,
J. E. Cabanela
Publication year - 2000
Publication title -
the astrophysical journal supplement series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.546
H-Index - 277
eISSN - 1538-4365
pISSN - 0067-0049
DOI - 10.1086/313300
Subject(s) - quasar , astrophysics , physics , ovv quasar , redshift , sky , spectral line , population , astronomy , observatory , galaxy , sociology , demography
We have used the VLA FIRST survey and the APM catalog of the POSS-I plates asthe basis for constructing a new radio-selected sample of optically brightquasars. This is the first radio-selected sample that is competitive in sizewith current optically selected quasar surveys. Using only two basic criteria,radio-optical positional coincidence and optical morphology, quasars and BLLacs can be identified with 60% selection efficiency; the efficiency increasesto 70% for objects fainter than magnitude 17. We show that a more sophisticatedselection scheme can predict with better than 85% reliability which candidateswill turn out to be quasars. This paper presents the second installment of the FIRST Bright Quasar Surveywith a catalog of 636 quasars distributed over 2682 square degrees. The quasarsample is characterized and all spectra are displayed. The FBQS detects bothradio-loud and radio-quiet quasars out to a redshift z>3. We find a largepopulation of objects of intermediate radio-loudness; there is no evidence inour sample for a bimodal distribution of radio characteristics. The sampleincludes ~29 broad absorption line quasars, both high and low ionization, and anumber of new objects with remarkable optical spectra.Comment: 41 pages plus 39 gifs which contain all quasar spectra. Accepted for publication in the Astrophysical Journal Supplement Serie

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