SDSS J0806+2006 and SDSS J1353+1138: Two new gravitationally lensed quasars from the Sloan Digital Sky Survey

被引：35

作者：

Inada, N

Oguri, M

Becker, RH

White, RL

Gregg, MD

Schechter, PL

Kawano, Y

Kochanek, CS

Richards, GT

Schneider, DP

Barentine, JC

Brewington, HJ

Brinkmann, J

Harvanek, M

Kleinman, SJ

Krzesinski, J

Long, D

Neilsen, EH

Nitta, A

Snedden, SA

York, DG

机构：

[1] Univ Tokyo, Fac Sci, Inst Astron, Mitaka, Tokyo 1810015, Japan

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

[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[4] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA

[5] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[6] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[7] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[8] Nagoya Univ, Dept Phys & Astrophys, Chikusa Ku, Nagoya, Aichi 4648062, Japan

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

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

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

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

[13] Cracow Pedagog Univ, Mt Suhora Observ, PL-30084 Krakow, Poland

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

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

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

来源：

ASTRONOMICAL JOURNAL | 2006年 / 131卷 / 04期

关键词：

gravitational lensing; quasars : individual (SDSS J080623.70+200631.9; SDSS J135306.35+113804.8);

D O I：

10.1086/500591

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discoveries of two two-image gravitationally lensed quasars selected from the Sloan Digital Sky Survey: SDSS J0806+2006 at z(s) = 540 and SDSS J1353+1138 at z(s) = 1.629 with image separations of Delta theta = 1."40 and Delta theta = 1."41, respectively. Spectroscopic and optical/near-infrared imaging follow-up observations show that the quasar images have identical redshifts and possess extended objects between the images that are likely to be lens galaxies at z(l) similar or equal to 0.6 in SDSS J0806+2006 and z(l) similar or equal to 0.3 in SDSS J1353+1138. The field of SDSS J0806+2006 contains several nearby galaxies that may significantly perturb the system, and SDSS J1353+1138 has an extra component near its Einstein ring that is probably a foreground star. Simple mass models with reasonable parameters reproduce the quasar positions and fluxes of both systems.

引用

页码：1934 / 1941

页数：8

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