Exploratory Chandra observations of the three highest redshift quasars known

William N. Brandt; Donald P. Schneider; Xiaohui Fan; Michael A. Strauss; James E. Gunn; Gordon T. Richards; Scott F. Anderson; Daniel E. Vanden Berk; Neta A. Bahcall; J. Brinkmann; Robert Brunner; Bing Chen; G. S. Hennessy; Donald Q. Lamb; Wolfgang Voges; Donald G. York

doi:10.1086/340581

Exploratory Chandra observations of the three highest redshift quasars known

William N. Brandt, Donald P. Schneider, Xiaohui Fan, Michael A. Strauss, James E. Gunn, Gordon T. Richards, Scott F. Anderson, Daniel E. Vanden Berk, Neta A. Bahcall, J. Brinkmann, Robert Brunner, Bing Chen, G. S. Hennessy, Donald Q. Lamb, Wolfgang Voges, Donald G. York

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Abstract

We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous XMM-Newton observation of a z = 5.74 quasar, form a complete set of color-selected, z>5.7 quasars. X-ray emission is detected from all of the quasars at levels that indicate that the X-ray-to-optical flux ratios of z ≈ 6, optically selected quasars are similar to those of lower redshift quasars. The observations demonstrate that it will be feasible to obtain quality X-ray spectra of z ≈ 6 quasars with current and future X-ray missions.

Original language	English (US)
Pages (from-to)	L5-L9
Journal	Astrophysical Journal
Volume	569
Issue number	1 II
DOIs	https://doi.org/10.1086/340581
State	Published - Apr 10 2002

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Galaxies: active
Galaxies: nuclei
Quasars: general
X-rays: galaxies

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Brandt, W. N., Schneider, D. P., Fan, X., Strauss, M. A., Gunn, J. E., Richards, G. T., Anderson, S. F., Vanden Berk, D. E., Bahcall, N. A., Brinkmann, J., Brunner, R., Chen, B., Hennessy, G. S., Lamb, D. Q., Voges, W., & York, D. G. (2002). Exploratory Chandra observations of the three highest redshift quasars known. Astrophysical Journal, 569(1 II), L5-L9. https://doi.org/10.1086/340581

@article{6c6ace535f3c4ee39425d2899b723ade,

title = "Exploratory Chandra observations of the three highest redshift quasars known",

abstract = "We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous XMM-Newton observation of a z = 5.74 quasar, form a complete set of color-selected, z>5.7 quasars. X-ray emission is detected from all of the quasars at levels that indicate that the X-ray-to-optical flux ratios of z ≈ 6, optically selected quasars are similar to those of lower redshift quasars. The observations demonstrate that it will be feasible to obtain quality X-ray spectra of z ≈ 6 quasars with current and future X-ray missions.",

keywords = "Galaxies: active, Galaxies: nuclei, Quasars: general, X-rays: galaxies",

author = "Brandt, {William N.} and Schneider, {Donald P.} and Xiaohui Fan and Strauss, {Michael A.} and Gunn, {James E.} and Richards, {Gordon T.} and Anderson, {Scott F.} and {Vanden Berk}, {Daniel E.} and Bahcall, {Neta A.} and J. Brinkmann and Robert Brunner and Bing Chen and Hennessy, {G. S.} and Lamb, {Donald Q.} and Wolfgang Voges and York, {Donald G.}",

year = "2002",

month = apr,

day = "10",

doi = "10.1086/340581",

language = "English (US)",

volume = "569",

pages = "L5--L9",

journal = "Astrophysical Journal",

issn = "0004-637X",

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number = "1 II",

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TY - JOUR

T1 - Exploratory Chandra observations of the three highest redshift quasars known

AU - Brandt, William N.

AU - Schneider, Donald P.

AU - Fan, Xiaohui

AU - Strauss, Michael A.

AU - Gunn, James E.

AU - Richards, Gordon T.

AU - Anderson, Scott F.

AU - Vanden Berk, Daniel E.

AU - Bahcall, Neta A.

AU - Brinkmann, J.

AU - Brunner, Robert

AU - Chen, Bing

AU - Hennessy, G. S.

AU - Lamb, Donald Q.

AU - Voges, Wolfgang

AU - York, Donald G.

PY - 2002/4/10

Y1 - 2002/4/10

N2 - We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous XMM-Newton observation of a z = 5.74 quasar, form a complete set of color-selected, z>5.7 quasars. X-ray emission is detected from all of the quasars at levels that indicate that the X-ray-to-optical flux ratios of z ≈ 6, optically selected quasars are similar to those of lower redshift quasars. The observations demonstrate that it will be feasible to obtain quality X-ray spectra of z ≈ 6 quasars with current and future X-ray missions.

AB - We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous XMM-Newton observation of a z = 5.74 quasar, form a complete set of color-selected, z>5.7 quasars. X-ray emission is detected from all of the quasars at levels that indicate that the X-ray-to-optical flux ratios of z ≈ 6, optically selected quasars are similar to those of lower redshift quasars. The observations demonstrate that it will be feasible to obtain quality X-ray spectra of z ≈ 6 quasars with current and future X-ray missions.

KW - Galaxies: active

KW - Galaxies: nuclei

KW - Quasars: general

KW - X-rays: galaxies

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U2 - 10.1086/340581

DO - 10.1086/340581

M3 - Article

AN - SCOPUS:0002482311

SN - 0004-637X

VL - 569

SP - L5-L9

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

Exploratory Chandra observations of the three highest redshift quasars known

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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