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. BrinkmannHoward 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

359 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

Keywords

Quasars: absorption lines
Quasars: emission lines
Quasars: general

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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{45af3529a640453883f7409b05a7b131,

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.",

keywords = "Quasars: absorption lines, Quasars: emission lines, Quasars: general",

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 = "IOP Publishing Ltd.",

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.

KW - Quasars: absorption lines

KW - Quasars: emission lines

KW - Quasars: general

UR - http://www.scopus.com/inward/record.url?scp=33645214956&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645214956&partnerID=8YFLogxK

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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