Discovery of an X-ray-selected quasar with a redshift of 4.45

被引：36

作者：

Schneider, DP

Schmidt, M

Hasinger, G

Lehmann, I

Gunn, JE

Giacconi, R

Trumper, J

Zamorani, G

机构：

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

[2] CALTECH, Pasadena, CA 91125 USA

[3] Astrophys Inst Potsdam, D-14482 Potsdam, Germany

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

[5] European So Observ, D-85748 Garching, Germany

[6] CNR, Ist Radioastron, I-40129 Bologna, Italy

来源：

ASTRONOMICAL JOURNAL | 1998年 / 115卷 / 04期

关键词：

quasars; individual (RX J105225.9+571905); X-rays;

D O I：

10.1086/300307

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present observations of RX J105225.9+571905, a z = 4.45 quasar discovered during a very deep ROSAT survey of the Lockman Hole. In addition to being the most distant known X-ray-selected quasar, RX J105225.9+571905 is among the least optically luminous quasars found to date at redshifts above 4.

引用

页码：1230 / 1233

页数：4

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