DISCOVERY OF FOUR DOUBLY IMAGED QUASAR LENSES FROM THE SLOAN DIGITAL SKY SURVEY

被引：16

作者：

Inada, Naohisa ^{[1
]}

Oguri, Masamune ^{[2
,3
]}

Rusu, Cristian E. ^{[4
,5
]}

Kayo, Issha ^{[6
,7
]}

Morokuma, Tomoki ^{[8
]}

机构：

[1] Nara Natl Coll Technol, Dept Phys, Yamato Koriyama, Nara 6391080, Japan

[2] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan

[4] Natl Astron Observ Japan, Div Opt & Infrared Astron, Mitaka, Tokyo 1818588, Japan

[5] Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan

[6] Toho Univ, Dept Phys, Funabashi, Chiba 2748510, Japan

[7] Tokyo Univ Technol, Dept Liberal Arts, Ota Ku, Tokyo 1448650, Japan

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

来源：

ASTRONOMICAL JOURNAL | 2014年 / 147卷 / 06期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

gravitational lensing: strong; quasars: general; SPECTROSCOPIC TARGET SELECTION; DATA RELEASE; CANDIDATE SELECTION; GALAXY; SPECTROGRAPH; CONSTRAINTS; CALIBRATION; TELESCOPE; MONITOR; SEARCH;

D O I：

10.1088/0004-6256/147/6/153

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of four doubly imaged quasar lenses. All the four systems are selected as lensed quasar candidates from the Sloan Digital Sky Survey data. We confirm their lensing hypothesis with additional imaging and spectroscopic follow-up observations. The discovered lenses are SDSS J0743+2457 with the source redshift z(s) = 2.165, the lens redshift z(l) = 0.381, and the image separation theta = 1.'' 034, SDSS J1128+2402 with z(s) = 1.608 and 0 = 0.'' 844, SDSS J1405+0959 with z(s) = 1.810, z(l) approximate to 0.66, and 0 = 1.'' 978, and SDSS J1515+1511 with z(s) = 2.054, z(l) = 0.742, and 0 = 1.'' 989. It is difficult to estimate the lens redshift of SDSS J1128+2402 from the current data. Two of the four systems (SDSS J1405+0959 and SDSS J1515+1511) are included in our final statistical lens sample to derive constraints on dark energy and the evolution of massive galaxies.

引用

页数：6

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