A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars

Xiaohui Fan; Michael A. Strauss; Gordon T. Richards; Joseph F. Hennawi; Robert H. Becker; Richard L. White; Aleksandar M. Diamond-Stanic; Jennifer L. Donley; Linhua Jiang; J. Serena Kim; Marianne Vestergaard; Jason E. Young; James E. Gunn; Robert H. Lupton; Gillian R. Knapp; Donald P. Schneider; W. N. Brandt; Neta A. Bahcall; J. C. Barentine; J. Brinkmann; Howard J. Brewington; Masataka Fukugita; Michael Harvanek; S. J. Kleinman; Jurek Krzesinski; Dan Long; Eric H. Neilsen; Atsuko Nitta; Stephanie A. Snedden; Wolfgang Voges

doi:10.1086/500296

A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars

Xiaohui Fan
, Michael A. Strauss
, Gordon T. Richards
, Joseph F. Hennawi
, Robert H. Becker
, Richard L. White
, Aleksandar M. Diamond-Stanic
, Jennifer L. Donley
, Linhua Jiang
, J. Serena Kim
, Marianne Vestergaard
, Jason E. Young
, James E. Gunn
, Robert H. Lupton
, Gillian R. Knapp
, Donald P. Schneider
, W. N. Brandt
, Neta A. Bahcall
, J. C. Barentine
, J. Brinkmann

Howard J. Brewington, Masataka Fukugita, Michael Harvanek, S. J. Kleinman, Jurek Krzesinski, Dan Long, Eric H. Neilsen, Atsuko Nitta, Stephanie A. Snedden, Wolfgang Voges

Research output: Contribution to journal › Review article › peer-review

378 Scopus citations

Abstract

We present the discovery of seven quasars at z > 5.7, selected from ∼2000 deg ² of multicolor imaging data of the Sloan Digital Sky Survey. The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS northern Galactic cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z = 5.93), exhibits no emission lines; the 3 σ limit on the rest-frame equivalent width of the Lyα+N v line is 5 Å. It is the highest redshift lineless quasar known and could be a gravitational lensed galaxy, a BL Lac object, or a new type of quasar. Two new z > 6 quasars, SDSS 1250+3130 (z = 6.13) and SDSS J1137+3549(z = 6.01), show deep Gunn-Peterson absorption gaps in Lyα. These gaps are narrower than the complete Gunn-Peterson absorption troughs observed among quasars at z > 6.2 and do not have complete Lyß absorption.

Original language	English (US)
Pages (from-to)	1203-1209
Number of pages	7
Journal	Astronomical Journal
Volume	131
Issue number	3
DOIs	https://doi.org/10.1086/500296
State	Published - Mar 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/500296

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Fan, X., Strauss, M. A., Richards, G. T., Hennawi, J. F., Becker, R. H., White, R. L., Diamond-Stanic, A. M., Donley, J. L., Jiang, L., Kim, J. S., Vestergaard, M., Young, J. E., Gunn, J. E., Lupton, R. H., Knapp, G. R., Schneider, D. P., Brandt, W. N., Bahcall, N. A., Barentine, J. C., ... Voges, W. (2006). A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars. Astronomical Journal, 131(3), 1203-1209. https://doi.org/10.1086/500296

@article{cee6555b242f4e879731617b7ce061d0,

title = "A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars",

abstract = "We present the discovery of seven quasars at z > 5.7, selected from ∼2000 deg 2 of multicolor imaging data of the Sloan Digital Sky Survey. The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS northern Galactic cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z = 5.93), exhibits no emission lines; the 3 σ limit on the rest-frame equivalent width of the Lyα+N v line is 5 {\AA}. It is the highest redshift lineless quasar known and could be a gravitational lensed galaxy, a BL Lac object, or a new type of quasar. Two new z > 6 quasars, SDSS 1250+3130 (z = 6.13) and SDSS J1137+3549(z = 6.01), show deep Gunn-Peterson absorption gaps in Lyα. These gaps are narrower than the complete Gunn-Peterson absorption troughs observed among quasars at z > 6.2 and do not have complete Ly{\ss} absorption.",

author = "Xiaohui Fan and Strauss, \{Michael A.\} and Richards, \{Gordon T.\} and Hennawi, \{Joseph F.\} and Becker, \{Robert H.\} and White, \{Richard L.\} and Diamond-Stanic, \{Aleksandar M.\} and Donley, \{Jennifer L.\} and Linhua Jiang and Kim, \{J. Serena\} and Marianne Vestergaard and Young, \{Jason E.\} and Gunn, \{James E.\} and Lupton, \{Robert H.\} and Knapp, \{Gillian R.\} and Schneider, \{Donald P.\} and Brandt, \{W. N.\} and Bahcall, \{Neta A.\} and Barentine, \{J. C.\} and J. Brinkmann and Brewington, \{Howard J.\} and Masataka Fukugita and Michael Harvanek and Kleinman, \{S. J.\} and Jurek Krzesinski and Dan Long and Neilsen, \{Eric H.\} and Atsuko Nitta and Snedden, \{Stephanie A.\} and Wolfgang Voges",

year = "2006",

month = mar,

doi = "10.1086/500296",

language = "English (US)",

volume = "131",

pages = "1203--1209",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "3",

}

Fan, X, Strauss, MA, Richards, GT, Hennawi, JF, Becker, RH, White, RL, Diamond-Stanic, AM, Donley, JL, Jiang, L, Kim, JS, Vestergaard, M, Young, JE, Gunn, JE, Lupton, RH, Knapp, GR, Schneider, DP , Brandt, WN, Bahcall, NA, Barentine, JC, Brinkmann, J, Brewington, HJ, Fukugita, M, Harvanek, M, Kleinman, SJ, Krzesinski, J, Long, D, Neilsen, EH, Nitta, A, Snedden, SA & Voges, W 2006, 'A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars', Astronomical Journal, vol. 131, no. 3, pp. 1203-1209. https://doi.org/10.1086/500296

TY - JOUR

T1 - A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars

AU - Fan, Xiaohui

AU - Strauss, Michael A.

AU - Richards, Gordon T.

AU - Hennawi, Joseph F.

AU - Becker, Robert H.

AU - White, Richard L.

AU - Diamond-Stanic, Aleksandar M.

AU - Donley, Jennifer L.

AU - Jiang, Linhua

AU - Kim, J. Serena

AU - Vestergaard, Marianne

AU - Young, Jason E.

AU - Gunn, James E.

AU - Lupton, Robert H.

AU - Knapp, Gillian R.

AU - Schneider, Donald P.

AU - Brandt, W. N.

AU - Bahcall, Neta A.

AU - Barentine, J. C.

AU - Brinkmann, J.

AU - Brewington, Howard J.

AU - Fukugita, Masataka

AU - Harvanek, Michael

AU - Kleinman, S. J.

AU - Krzesinski, Jurek

AU - Long, Dan

AU - Neilsen, Eric H.

AU - Nitta, Atsuko

AU - Snedden, Stephanie A.

AU - Voges, Wolfgang

PY - 2006/3

Y1 - 2006/3

N2 - We present the discovery of seven quasars at z > 5.7, selected from ∼2000 deg 2 of multicolor imaging data of the Sloan Digital Sky Survey. The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS northern Galactic cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z = 5.93), exhibits no emission lines; the 3 σ limit on the rest-frame equivalent width of the Lyα+N v line is 5 Å. It is the highest redshift lineless quasar known and could be a gravitational lensed galaxy, a BL Lac object, or a new type of quasar. Two new z > 6 quasars, SDSS 1250+3130 (z = 6.13) and SDSS J1137+3549(z = 6.01), show deep Gunn-Peterson absorption gaps in Lyα. These gaps are narrower than the complete Gunn-Peterson absorption troughs observed among quasars at z > 6.2 and do not have complete Lyß absorption.

AB - We present the discovery of seven quasars at z > 5.7, selected from ∼2000 deg 2 of multicolor imaging data of the Sloan Digital Sky Survey. The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS northern Galactic cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z = 5.93), exhibits no emission lines; the 3 σ limit on the rest-frame equivalent width of the Lyα+N v line is 5 Å. It is the highest redshift lineless quasar known and could be a gravitational lensed galaxy, a BL Lac object, or a new type of quasar. Two new z > 6 quasars, SDSS 1250+3130 (z = 6.13) and SDSS J1137+3549(z = 6.01), show deep Gunn-Peterson absorption gaps in Lyα. These gaps are narrower than the complete Gunn-Peterson absorption troughs observed among quasars at z > 6.2 and do not have complete Lyß absorption.

UR - https://www.scopus.com/pages/publications/33645214956

UR - https://www.scopus.com/pages/publications/33645214956#tab=citedBy

U2 - 10.1086/500296

DO - 10.1086/500296

M3 - Review article

AN - SCOPUS:33645214956

SN - 0004-6256

VL - 131

SP - 1203

EP - 1209

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

ER -

A survey of z> 5.7 quasars in the sloan digital sky survey. IV. Discovery of seven additional quasars

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