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S. Jester (Fermilab), G. T. Richards (Princeton), D. P. Schneider (Penn State), C. Stoughton (Fermilab), R. F. Green (NOAO), J. E. Gunn (Princeton), P. B. Hall (York U.), R. G. Kron (U. Chicago/Fermilab), M. Schmidt (Caltech), D. E. Vanden Berk (Penn State)
We compare the properties of UV excess-selected PG quasars to the ``PG-like'' subset of SDSS multicolor-selected quasars. We find no statistically significant differences in the distributions of optical colors, redshift, or radio properties taken from the FIRST survey (radio flux, power, and radio-optical flux ratio). Comparing the PG quasars to the entire SDSS quasar sample, we find that the PG UV excess selection criterion does not remove any objects from the PG that are not already removed by the B-band brightness limit. Thus, PG quasars constitute a representative sample of quasars which are bright in the B-band. However, the i-band limited SDSS sample includes objects with a much wider range of colors at i-band magnitudes similar to those of the PG objects. Thus, the PG sample is not fully representative of today's fainter quasar samples and may be biased in important ways (e.g., its X-ray properties).
Funding for the Sloan Digital Sky Survey (SDSS) has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho, and the Max Planck Society. The SDSS is managed by the Astrophysical Research Consortium (ARC) for the Participating Institutions. The Participating Institutions are The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, the Korean Scientist Group, Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washington.
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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.