High-redshift quasars found in Sloan Digital Sky Survey commissioning data. II. The spring Equatorial Stripe

被引：66

作者：

Fan, XH

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

Ivezic, Z

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

机构：

[1] Princeton Univ Observ, Princeton, NJ 08544 USA

[2] Univ Washington, Dept Astron, Seattle, WA 98195 USA

[3] Max Planck Inst Extraterr Phys, D-85750 Garching, Germany

[4] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[5] Apache Point Observ, Sunspot, NM 88349 USA

[6] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[7] CALTECH, Dept Astron, Pasadena, CA 91125 USA

[8] Eotvos Lorand Univ, Dept Phys Complex Syst, H-1117 Budapest, Hungary

[9] Univ Tokyo, Sch Sci, Dept Astron, Tokyo 1130033, Japan

[10] Univ Chicago, Ctr Astron & Astrophys, Chicago, IL 60637 USA

[11] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan

[12] Inst Adv Study, Princeton, NJ 08540 USA

[13] USN Observ, Washington, DC 20392 USA

[14] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[15] USN Observ, Flagstaff Stn, Flagstaff, AZ 86002 USA

[16] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[17] Univ Tokyo, Sch Sci, Res Ctr Early Universe, Tokyo 1130033, Japan

来源：

ASTRONOMICAL JOURNAL | 2000年 / 119卷 / 01期

关键词：

quasars : general; surveys;

D O I：

10.1086/301191

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 250 deg(2) 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 < M < M(B) -26.1 (h = 0.5, q(0) = 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.

引用

页码：1 / 11

页数：11

共 29 条

[11] The Sloan Digital Sky Survey photometric camera [J].