The redshift of a lensing galaxy in PMN J0134-0931

被引：24

作者：

Hall, PB

Richards, GT

York, DG

Keeton, CR

Bowen, DV

Schneider, DP

Schlegel, DJ

Brinkmann, J

机构：

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

[2] Pontificia Univ Catolica Chile, Fac Fis, Dept Astron & Astrofis, Santiago 22, Chile

[3] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[4] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

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

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 575卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

dust; extinction; gravitational lensing; quasars : individual (PMN J0134-0931);

D O I：

10.1086/342784

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Sloan Digital Sky Survey (SDSS) automatically targeted as a quasar candidate the recently discovered, gravitationally lensed, extremely reddened z = 2.2 quasar PMN 0134-0931. The SDSS spectrum exhibits Ca II absorption at z = 0.76451, which we identify as the redshift of a lensing galaxy. Hubble Space Telescope imaging shows that components C, D, and E of the system are significantly redder than components A or B and detects faint galaxy emission between D and A+B. The redshift of the dust responsible for the reddening remains unconstrained with current data. However, we outline a model wherein lensing and differential reddening by a z = 0.76454 galaxy pair can entirely explain this system.

引用

页码：L51 / L54

页数：4

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