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The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later

  • Authors: Richard L. White, Robert H. Becker, Michael D. Gregg, Sally A. Laurent-Muehleisen, Michael S. Brotherton, Chris D. Impey, Catherine E. Petry, Craig B. Foltz, Frederic H. Chaffee, Gordon T. Richards, William R. Oegerle, David J. Helfand, Richard G. McMahon, and Juan E. Cabanela

White et al. 2000 The Astrophysical Journal Supplement Series 126 133.

  • Provider: AAS Journals

Caption: Fig. 15.

Left: Histogram of radio‐optical ratio ﹩R^{*}﹩ (Stocke et al. 1992) for FBQS quasars. Shaded area represents previously known quasars. The dotted histogram includes ﹩R^{*}﹩ upper limits for Véron catalog objects in the FBQS area but not detected by FIRST. The Véron quasars (shaded plus dotted histograms) show a bimodal distribution of ﹩R^{*}﹩, with a dip around ﹩R^{*}=3﹩–30, but the FBQS quasar counts rise continuously through that region and show no obviously evidence for bimodality. Right: Fraction of newly discovered quasars vs. ﹩R^{*}﹩. The FBQS is increasing the number of known objects in the radio‐quiet/radio‐loud transition region (﹩R^{*}=1﹩–100) by a large factor.

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