Quasar Clustering at 25 h−1 kpc from a Complete Sample of Binaries*

@article{Myers2007QuasarCA,
  title={Quasar Clustering at 25 h−1 kpc from a Complete Sample of Binaries*},
  author={A. Myers and G. Richards and R. Brunner and D. Schneider and N. Strand and P. Hall and J. A. Blomquist and D. G. York},
  journal={The Astrophysical Journal},
  year={2007},
  volume={678},
  pages={635-646}
}
  • A. Myers, G. Richards, +5 authors D. G. York
  • Published 2007
  • Physics
  • The Astrophysical Journal
  • We present spectroscopy of binary quasar candidates, with component separations of 3'' ≤ Δ θ < 6'', selected from Data Release 4 of the Sloan Digital Sky Survey (SDSS DR4) using kernel density estimation (KDE). Of our 27 new quasar pair observations, 10 are binary quasars, which doubles the number of known g < 21 binaries with 3'' ≤ Δ θ < 6'' separations. Several of our observed binaries are wide-separation lens candidates that merit additional higher resolution spectroscopy, as well as deep… CONTINUE READING
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