A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ∼ 6

@article{Fan2001ASO,
  title={A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ∼ 6},
  author={Xiaohui Fan and Vijay K. Narayanan and Robert H. Lupton and Michael A. Strauss and Gillian R. Knapp and Robert H. Becker and Richard L. White and Laura Pentericci and Sandy K. Leggett and Zolt{\'a}n Haiman and James E. Gunn and Željko Ivezi{\'c} and Donald P. Schneider and Scott F. Anderson and Jonathan Brinkmann and Neta A. Bahcall and Andrew J. Connolly and Istv{\'a}n Csabai and Mamoru Doi and Masataka Fukugita and Thomas R. Geballe and Eva K. Grebel and Daniel R. Harbeck and Gregory S. Hennessy and Donald Q. Lamb and Gajus A. Miknaitis and Jeffrey A. Munn and Robert C. Nichol and Sadanori Okamura and Jeffrey R. Pier and Francisco Prada and Gordon T. Richards and Alexander S. Szalay and Donald G. York},
  journal={The Astronomical Journal},
  year={2001},
  volume={122},
  pages={2833 - 2849}
}
We present the results from a survey of i-dropout objects selected from ∼1550 deg2 of multicolor imaging data from the Sloan Digital Sky Survey to search for luminous quasars at z ≳ 5.8. Objects with i*-z* > 2.2 and z* < 20.2 are selected, and follow-up J-band photometry is used to separate L- and T-type cool dwarfs from high-redshift quasars. We describe the discovery of three new quasars, SDSSp J083643.85+005453.3 (z = 5.82), J130608.26+035626.3 (z = 5.99), and J103027.10+052455.0 (z = 6.28… 
A Survey of z > 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at z > 6
We present the discovery of three new quasars at z > 6 in ∼ 1300 deg2 of Sloan Digital Sky Survey imaging data, J114816.64+525150.3 (z = 6.43), J104845.05+463718.3 (z = 6.23), and J163033.90+401209.6
A Survey of z > 5.7 Quasars in the Sloan Digital Sky Survey. IV. Discovery of Seven Additional Quasars
We present the discovery of seven quasars at z > 5.7, selected from ∼2000 deg2 of multicolor imaging data of the Sloan Digital Sky Survey. The new quasars have redshifts z from 5.79 to 6.13. Five are
A SURVEY OF z ∼ 6 QUASARS IN THE SLOAN DIGITAL SKY SURVEY DEEP STRIPE. I. A FLUX-LIMITED SAMPLE AT zAB < 21
We present the discovery of five quasars at z ∼ 6 selected from 260 deg2 of the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along
Discovery of Three z > 6.5 Quasars in the VISTA Kilo-Degree Infrared Galaxy (VIKING) Survey
Studying quasars at the highest redshifts can constrain models of galaxy and black hole formation, and it also probes the intergalactic medium in the early universe. Optical surveys have to date
Filling in the Quasar Redshift Gap at z ∼ 5.5. II. A Complete Survey of Luminous Quasars in the Post-reionization Universe
We present the final results from our survey of luminous z ∼ 5.5 quasars. This is the first systematic quasar survey focusing on quasars at z ∼ 5.5, during the post-reionization epoch. It has been
A SURVEY OF z ∼ 6 QUASARS IN THE SLOAN DIGITAL SKY SURVEY DEEP STRIPE. II. DISCOVERY OF SIX QUASARS AT z AB>21
We present the discovery of six new quasars at z ∼ 6 selected from the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along the
Discovery of an Optically Faint Quasar at z = 5.70 and Implications for the Faint Endof the Quasar Luminosity Function
We present observations of an optically faint quasar, RD J114816.2+525339 (hereafter RD J1148+5253), discovered from deep multicolor observations of the field around the z = 6.42 quasar SDSS
A Snapshot Survey for Gravitational Lenses among z ≥ 4.0 Quasars. II. Constraints on the 4.0 < z < 5.4 Quasar Population
We report on i-band snapshot observations of 157 Sloan Digital Sky Survey quasars at 4.0 < z < 5.4 using the Advanced Camera for Surveys on the Hubble Space Telescope (HST) to search for evidence of
THE SUBARU HIGH-z QUASAR SURVEY: DISCOVERY OF FAINT z ∼ 6 QUASARS
We present the discovery of one or two extremely faint z ∼ 6 quasars in 6.5 deg2 utilizing a unique capability of the wide-field imaging of the Subaru/Suprime-Cam. The quasar selection was made in
Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infrared colour selection
We present the discovery of two z > 6 quasars, selected as i-band dropouts in the Very Large Telescope Survey Telescope ATLAS survey. Our first quasar has redshift, z = 6.31 ± 0.03, z-band magnitude,
...
...

References

SHOWING 1-10 OF 66 REFERENCES
Colors of 2625 Quasars at 0 < z < 5 Measured in the Sloan Digital Sky Survey Photometric System
We present an empirical investigation of the colors of quasars in the Sloan Digital Sky Survey (SDSS) photometric system. The sample studied includes 2625 quasars with SDSS photometry: 1759 quasars
The Discovery of a Luminous z = 5.80 Quasar from the Sloan Digital Sky Survey
We present observations of SDSSp J104433.04-012502.2, a luminous quasar at z = 5.80 discovered from Sloan Digital Sky Survey (SDSS) multicolor imaging data. This object was selected as an i′-band
High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data
We present photometric and spectroscopic observations of 15 high-redshift quasars (z > 3.6) discovered from ∼140 deg2 of five-color (u′, g′, r′, i′, and z′) imaging data taken by the Sloan Digital
Evidence for Reionization at z ∼ 6: Detection of a Gunn-Peterson Trough in a z = 6.28 Quasar
We present moderate-resolution Keck spectroscopy of quasars at z = 5.82, 5.99, and 6.28, discovered by the Sloan Digital Sky Survey (SDSS). We find that the Lyα absorption in the spectra of these
Five High-Redshift Quasars Discovered in Commissioning Imaging Data of the Sloan Digital Sky Survey
We report the discovery of five quasars with redshifts of 4.67–5.27 and z′-band magnitudes of 19.5–20.7 (MB ∼ -27). All were originally selected as distant quasar candidates in optical/near-infrared
An XMM-Newton Detection of the z = 5.80 X-Ray-Weak Quasar SDSSp J104433.04-012502.2
We report on an XMM-Newton observation of the most distant known quasar, SDSSp J104433.04-012502.2, at z = 5.80. We have detected this quasar with high significance in the rest-frame 3.4–13.6 keV
The Discovery of a High-Redshift Quasar without Emission Lines from Sloan Digital Sky Survey Commissioning Data
TLDR
A luminous unresolved object with a featureless optical spectrum redward of the Lyalpha forest region, discovered from Sloan Digital Sky Survey commissioning data, is either the most distant BL Lac object known to date, with very weak radio emission, or a new type of unbeamed quasar, whose broad emission line region is very weak or absent.
J-Band Spectroscopy of the z = 5.74 Broad Absorption Line Quasar SDSSp J104433.04–012502.2
We use NIRSPEC, a near-IR spectrometer on Keck II, to obtain moderate-resolution (R = 1540) spectroscopy that shows conclusively that the C IV emission line in the z = 5.74 quasar SDSSp
A 250 GHz Survey of High-Redshift Quasars from the Sloan Digital Sky Survey
We present observations at 250 GHz (1.2 mm), 43 GHz, and 1.4 GHz of a sample of 41 QSOs at z > 3.7 found in the Sloan Digital Sky Survey. We detect 16 sources with a 250 GHz flux density greater than
Optical and Infrared Colors of Stars Observed by the Two Micron All Sky Survey and the Sloan Digital Sky Survey
We discuss optical and infrared photometric properties of stars matched in the Two Micron All Sky Survey (2MASS) and the Sloan Digital Sky Survey (SDSS) commissioning data for ∼50 deg2 of sky along
...
...