High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations

Donald P. Schneider; Xiaohui Fan; Michael A. Strauss; James E. Gunn; Gordon T. Richards; Gary J. Hill; Phillip J. MacQueen; Lawrence W. Ramsey; Mark T. Adams; John A. Booth; Grant M. Hill; G. R. Knapp; Robert H. Lupton; David H. Saxe; Matthew Shetrone; Joseph R. Tufts; Daniel E. Vanden Berk; Marsha J. Wolf; Donald G. York; John E. Anderson; Scott F. Anderson; Neta A. Bahcall; J. Brinkmann; Robert Brunner; Istvan Csabai; Masataka Fukugita; G. S. Hennessy; Željko Ivezić; Donald Q. Lamb; Jeffrey A. Munn; Aniruddha R. Thakar

doi:10.1086/319422

High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations

Donald P. Schneider, Xiaohui Fan, Michael A. Strauss, James E. Gunn, Gordon T. Richards, Gary J. Hill, Phillip J. MacQueen, Lawrence W. Ramsey, Mark T. Adams, John A. Booth, Grant M. Hill, G. R. Knapp, Robert H. Lupton, David H. Saxe, Matthew Shetrone, Joseph R. Tufts, Daniel E. Vanden Berk, Marsha J. Wolf, Donald G. York, John E. AndersonScott F. Anderson, Neta A. Bahcall, J. Brinkmann, Robert Brunner, Istvan Csabai, Masataka Fukugita, G. S. Hennessy, Željko Ivezić, Donald Q. Lamb, Jeffrey A. Munn, Aniruddha R. Thakar

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Abstract

We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning data. The redshifts were confirmed with low-resolution spectra obtained at the Hobby-Eberly Telescope. The quasars' i* magnitudes range from 18.55 to 20.97. Nearly 60% of the quasar candidates observed are confirmed spectroscopically as quasars. Two of the objects are broad absorption line quasars, and several other quasars appear to have narrow associated absorption features.

Original language	English (US)
Pages (from-to)	1232-1240
Number of pages	9
Journal	Astronomical Journal
Volume	121
Issue number	3
DOIs	https://doi.org/10.1086/319422
State	Published - Mar 2001
Externally published	Yes

Keywords

Early universe
Quasars: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1086/319422

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Schneider, D. P., Fan, X., Strauss, M. A., Gunn, J. E., Richards, G. T., Hill, G. J., MacQueen, P. J., Ramsey, L. W., Adams, M. T., Booth, J. A., Hill, G. M., Knapp, G. R., Lupton, R. H., Saxe, D. H., Shetrone, M., Tufts, J. R., Vanden Berk, D. E., Wolf, M. J., York, D. G., ... Thakar, A. R. (2001). High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations. Astronomical Journal, 121(3), 1232-1240. https://doi.org/10.1086/319422

Schneider, DP, Fan, X, Strauss, MA, Gunn, JE, Richards, GT, Hill, GJ, MacQueen, PJ, Ramsey, LW, Adams, MT, Booth, JA, Hill, GM, Knapp, GR, Lupton, RH, Saxe, DH, Shetrone, M, Tufts, JR, Vanden Berk, DE, Wolf, MJ, York, DG, Anderson, JE, Anderson, SF, Bahcall, NA, Brinkmann, J, Brunner, R, Csabai, I, Fukugita, M, Hennessy, GS, Ivezić, Ž, Lamb, DQ, Munn, JA & Thakar, AR 2001, 'High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations', Astronomical Journal, vol. 121, no. 3, pp. 1232-1240. https://doi.org/10.1086/319422

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title = "High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations",

abstract = "We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning data. The redshifts were confirmed with low-resolution spectra obtained at the Hobby-Eberly Telescope. The quasars' i* magnitudes range from 18.55 to 20.97. Nearly 60\% of the quasar candidates observed are confirmed spectroscopically as quasars. Two of the objects are broad absorption line quasars, and several other quasars appear to have narrow associated absorption features.",

keywords = "Early universe, Quasars: general",

author = "Schneider, \{Donald P.\} and Xiaohui Fan and Strauss, \{Michael A.\} and Gunn, \{James E.\} and Richards, \{Gordon T.\} and Hill, \{Gary J.\} and MacQueen, \{Phillip J.\} and Ramsey, \{Lawrence W.\} and Adams, \{Mark T.\} and Booth, \{John A.\} and Hill, \{Grant M.\} and Knapp, \{G. R.\} and Lupton, \{Robert H.\} and Saxe, \{David H.\} and Matthew Shetrone and Tufts, \{Joseph R.\} and \{Vanden Berk\}, \{Daniel E.\} and Wolf, \{Marsha J.\} and York, \{Donald G.\} and Anderson, \{John E.\} and Anderson, \{Scott F.\} and Bahcall, \{Neta A.\} and J. Brinkmann and Robert Brunner and Istvan Csabai and Masataka Fukugita and Hennessy, \{G. S.\} and {\v Z}eljko Ivezi{\'c} and Lamb, \{Donald Q.\} and Munn, \{Jeffrey A.\} and Thakar, \{Aniruddha R.\}",

year = "2001",

month = mar,

doi = "10.1086/319422",

language = "English (US)",

volume = "121",

pages = "1232--1240",

journal = "Astronomical Journal",

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AU - Schneider, Donald P.

AU - Fan, Xiaohui

AU - Strauss, Michael A.

AU - Gunn, James E.

AU - Richards, Gordon T.

AU - Hill, Gary J.

AU - MacQueen, Phillip J.

AU - Ramsey, Lawrence W.

AU - Adams, Mark T.

AU - Booth, John A.

AU - Hill, Grant M.

AU - Knapp, G. R.

AU - Lupton, Robert H.

AU - Saxe, David H.

AU - Shetrone, Matthew

AU - Tufts, Joseph R.

AU - Vanden Berk, Daniel E.

AU - Wolf, Marsha J.

AU - York, Donald G.

AU - Anderson, John E.

AU - Anderson, Scott F.

AU - Bahcall, Neta A.

AU - Brinkmann, J.

AU - Brunner, Robert

AU - Csabai, Istvan

AU - Fukugita, Masataka

AU - Hennessy, G. S.

AU - Ivezić, Željko

AU - Lamb, Donald Q.

AU - Munn, Jeffrey A.

AU - Thakar, Aniruddha R.

PY - 2001/3

Y1 - 2001/3

N2 - We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning data. The redshifts were confirmed with low-resolution spectra obtained at the Hobby-Eberly Telescope. The quasars' i* magnitudes range from 18.55 to 20.97. Nearly 60% of the quasar candidates observed are confirmed spectroscopically as quasars. Two of the objects are broad absorption line quasars, and several other quasars appear to have narrow associated absorption features.

AB - We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning data. The redshifts were confirmed with low-resolution spectra obtained at the Hobby-Eberly Telescope. The quasars' i* magnitudes range from 18.55 to 20.97. Nearly 60% of the quasar candidates observed are confirmed spectroscopically as quasars. Two of the objects are broad absorption line quasars, and several other quasars appear to have narrow associated absorption features.

KW - Early universe

KW - Quasars: general

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High-redshift quasars found in sloan digital sky survey commissioning data. V. Hobby-Eberly telescope observations

Abstract

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