High-redshift quasars found in Sloan Digital Sky Survey commissioning data

被引：142

作者：

Fan, XH

Strauss, MA

Schneider, DP

Gunn, JE

Lupton, RH

Yanny, B

Anderson, SF

Anderson, JE

Annis, J

Bahcall, NA

Bakken, JA

Bastian, S

Berman, E

Boroski, WN

Briegel, C

Briggs, JW

Brinkmann, J

Carr, MA

Colestock, PL

Connolly, AJ

Crocker, JH

Csabai, I

Czarapata, PC

Davis, JE

Doi, M

Elms, BR

Evans, ML

Federwitz, GR

Frieman, JA

Fukugita, M

Gurbani, VK

Harris, FH

Heckman, TM

Hennessy, GS

Hindsley, RB

Holmgren, DJ

Hull, C

Ichikawa, SI

Ichikawa, T

Ivezic, Z

Kent, S

Knapp, GR

Kron, RG

Lamb, DQ

Leger, RF

Limmongkol, S

Lindenmeyer, C

Long, DC

Loveday, J

MacKinnon, B

机构：

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

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

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

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

[5] Univ Chicago, Yerkes Observ, Williams Bay, WI 53191 USA

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

[7] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

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

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

[10] Univ Tokyo, Sch Sci, Res Ctr Early Universe, Bunkyo Ku, Tokyo 113003, Japan

[11] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 113003, Japan

[12] Natl Astron Observ, Mitaka, Tokyo 1818588, Japan

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

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

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

[16] IIT, Chicago, IL 60616 USA

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

[18] USN Observ, Washington, DC 20392 USA

[19] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA

[20] Tohoku Univ, Inst Astron, Aoba Ku, Sendai, Miyagi 9808578, Japan

[21] Merrill Lynch, Chiyoda Ku, Tokyo 100, Japan

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

[23] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15232 USA

[24] Lucent Technol, Naperville, IL 60566 USA

[25] Rochester Inst Technol, Dept Phys, Rochester, NY 14623 USA

[26] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

来源：

ASTRONOMICAL JOURNAL | 1999年 / 118卷 / 01期

关键词：

quasars; general;

D O I：

10.1086/300944

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present photometric and spectroscopic observations of 15 high-redshift quasars (z > 3.6) discovered from similar to 140 deg(2) of five-color (u', g', r', i', and z') imaging data taken by the Sloan Digital Sky Survey (SDSS) during its commissioning phase. The quasars are selected by their distinctive colors in SDSS multicolor space. Four of the quasars have redshifts higher than 4.6 (z = 4.63, 4.75, 4.90, and 5.00, the latter being the highest redshift quasar yet known). In addition, two previously known z > 4 objects were recovered from the data. The quasars all have i* < 20 and have luminosities comparable to that of 3C 273. The spectra of the quasars have similar features (strong, broad emission lines and substantial absorption blueward of the Ly alpha emission line) seen in previously known high-redshift quasars. Although the photometric accuracy and image quality fail to meet the final survey requirements, our success rate for identifying high-redshift quasars (17 quasars from 27 candidates) is much higher than that of previous multicolor surveys. However, the numbers of high-redshift quasars found is in close accord with the number density inferred from previous surveys.

引用

页码：1 / 13

页数：13

共 47 条

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