High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe

Xiaohui Fan, Michael A. Strauss, Donald P. Schneider, James E. Gunn, Robert H. Lupton, Scott F. Anderson, Wolfgang Voges, Bruce Margon, James Annis, Neta A. Bahcall, J. Brinkmann, Robert J. Brunner, Michael A. Carr, István Csabai, Mamoru Doi, Joshua A. Frieman, Masataka Fukugita, G. S. Hennessy, Robert B. Hindsley, Željko Ivezić & 16 others G. R. Knapp, D. Q. Lamb, Timothy A. Mckay, Jeffrey A. Munn, Heidi Jo Newberg, A. George Pauls, Jeffrey R. Pier, Ron Rechenmacher, Gordon T. Richards, Constance M. Rockosi, Chris Stoughton, Alexander S. Szalay, Aniruddha R. Thakar, Douglas L. Tucker, Patrick Waddell, Donald G. York

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

This is the second paper in a series aimed at finding high-redshift quasars from five-color (u′g′r′i′z′) imaging data taken along the Celestial Equator by the Sloan Digital Sky Survey (SDSS) during its commissioning phase. In this paper, we present 22 high-redshift quasars (z > 3.6) discovered from ∼250 deg2 of data in the spring Equatorial Stripe, plus photometry for two previously known high-redshift quasars in the same region of the sky. Our success rate in identifying high-redshift quasars is 68%. Five of the newly discovered quasars have redshifts higher than 4.6 (z = 4.62, 4.69, 4.70, 4.92, and 5.03). All the quasars have i* < 20.2 with absolute magnitude -28.8 < MB < -26.1 (h = 0.5, q0 = 0.5). Several of the quasars show unusual emission and absorption features in their spectra, including an object at z = 4.62 without detectable emission lines, and a broad absorption line (BAL) quasar at z = 4.92.

Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalAstronomical Journal
Volume119
Issue number1
StatePublished - Jan 2000
Externally publishedYes

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quasars
equators
photometry
sky
color
rate

Keywords

  • Quasars: general
  • Surveys

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Fan, X., Strauss, M. A., Schneider, D. P., Gunn, J. E., Lupton, R. H., Anderson, S. F., ... York, D. G. (2000). High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe. Astronomical Journal, 119(1), 1-11.

High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe. / Fan, Xiaohui; Strauss, Michael A.; Schneider, Donald P.; Gunn, James E.; Lupton, Robert H.; Anderson, Scott F.; Voges, Wolfgang; Margon, Bruce; Annis, James; Bahcall, Neta A.; Brinkmann, J.; Brunner, Robert J.; Carr, Michael A.; Csabai, István; Doi, Mamoru; Frieman, Joshua A.; Fukugita, Masataka; Hennessy, G. S.; Hindsley, Robert B.; Ivezić, Željko; Knapp, G. R.; Lamb, D. Q.; Mckay, Timothy A.; Munn, Jeffrey A.; Newberg, Heidi Jo; Pauls, A. George; Pier, Jeffrey R.; Rechenmacher, Ron; Richards, Gordon T.; Rockosi, Constance M.; Stoughton, Chris; Szalay, Alexander S.; Thakar, Aniruddha R.; Tucker, Douglas L.; Waddell, Patrick; York, Donald G.

In: Astronomical Journal, Vol. 119, No. 1, 01.2000, p. 1-11.

Research output: Contribution to journalArticle

Fan, X, Strauss, MA, Schneider, DP, Gunn, JE, Lupton, RH, Anderson, SF, Voges, W, Margon, B, Annis, J, Bahcall, NA, Brinkmann, J, Brunner, RJ, Carr, MA, Csabai, I, Doi, M, Frieman, JA, Fukugita, M, Hennessy, GS, Hindsley, RB, Ivezić, Ž, Knapp, GR, Lamb, DQ, Mckay, TA, Munn, JA, Newberg, HJ, Pauls, AG, Pier, JR, Rechenmacher, R, Richards, GT, Rockosi, CM, Stoughton, C, Szalay, AS, Thakar, AR, Tucker, DL, Waddell, P & York, DG 2000, 'High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe', Astronomical Journal, vol. 119, no. 1, pp. 1-11.
Fan X, Strauss MA, Schneider DP, Gunn JE, Lupton RH, Anderson SF et al. High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe. Astronomical Journal. 2000 Jan;119(1):1-11.
Fan, Xiaohui ; Strauss, Michael A. ; Schneider, Donald P. ; Gunn, James E. ; Lupton, Robert H. ; Anderson, Scott F. ; Voges, Wolfgang ; Margon, Bruce ; Annis, James ; Bahcall, Neta A. ; Brinkmann, J. ; Brunner, Robert J. ; Carr, Michael A. ; Csabai, István ; Doi, Mamoru ; Frieman, Joshua A. ; Fukugita, Masataka ; Hennessy, G. S. ; Hindsley, Robert B. ; Ivezić, Željko ; Knapp, G. R. ; Lamb, D. Q. ; Mckay, Timothy A. ; Munn, Jeffrey A. ; Newberg, Heidi Jo ; Pauls, A. George ; Pier, Jeffrey R. ; Rechenmacher, Ron ; Richards, Gordon T. ; Rockosi, Constance M. ; Stoughton, Chris ; Szalay, Alexander S. ; Thakar, Aniruddha R. ; Tucker, Douglas L. ; Waddell, Patrick ; York, Donald G. / High-redshift quasars found in sloan digital sky survey commissioning data. II. The spring equatorial stripe. In: Astronomical Journal. 2000 ; Vol. 119, No. 1. pp. 1-11.
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AU - Fan, Xiaohui

AU - Strauss, Michael A.

AU - Schneider, Donald P.

AU - Gunn, James E.

AU - Lupton, Robert H.

AU - Anderson, Scott F.

AU - Voges, Wolfgang

AU - Margon, Bruce

AU - Annis, James

AU - Bahcall, Neta A.

AU - Brinkmann, J.

AU - Brunner, Robert J.

AU - Carr, Michael A.

AU - Csabai, István

AU - Doi, Mamoru

AU - Frieman, Joshua A.

AU - Fukugita, Masataka

AU - Hennessy, G. S.

AU - Hindsley, Robert B.

AU - Ivezić, Željko

AU - Knapp, G. R.

AU - Lamb, D. Q.

AU - Mckay, Timothy A.

AU - Munn, Jeffrey A.

AU - Newberg, Heidi Jo

AU - Pauls, A. George

AU - Pier, Jeffrey R.

AU - Rechenmacher, Ron

AU - Richards, Gordon T.

AU - Rockosi, Constance M.

AU - Stoughton, Chris

AU - Szalay, Alexander S.

AU - Thakar, Aniruddha R.

AU - Tucker, Douglas L.

AU - Waddell, Patrick

AU - York, Donald G.

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N2 - This is the second paper in a series aimed at finding high-redshift quasars from five-color (u′g′r′i′z′) imaging data taken along the Celestial Equator by the Sloan Digital Sky Survey (SDSS) during its commissioning phase. In this paper, we present 22 high-redshift quasars (z > 3.6) discovered from ∼250 deg2 of data in the spring Equatorial Stripe, plus photometry for two previously known high-redshift quasars in the same region of the sky. Our success rate in identifying high-redshift quasars is 68%. Five of the newly discovered quasars have redshifts higher than 4.6 (z = 4.62, 4.69, 4.70, 4.92, and 5.03). All the quasars have i* < 20.2 with absolute magnitude -28.8 < MB < -26.1 (h = 0.5, q0 = 0.5). Several of the quasars show unusual emission and absorption features in their spectra, including an object at z = 4.62 without detectable emission lines, and a broad absorption line (BAL) quasar at z = 4.92.

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