SDSS J115517.35+634622.0: A Newly Discovered Gravitationally Lensed Quasar
SDSS J115517.35+634622.0: A Newly Discovered Gravitationally Lensed Quasar
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SDSS J115517.35 634622.0：新发现的引力透镜类星体
DOI：
10.1086/381904
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
D. York
中科院分区：
文献类型：
--
作者：
B. Pindor;D. Eisenstein;N. Inada;M. Gregg;R. Becker;J. Brinkmann;S. Burles;J. Frieman;D. Johnston;G. Richards;D. Schneider;R. Scranton;M. Sekiguchi;E. Turner;D. York
我们报告发现了 SDSS J115517.35+634622.0，这是一颗以前未知的引力透镜类星体。透镜系统展示两个 z = 2.89 类星体的图像，图像间隔为 1.″832 ± 0.″007。该系统的近红外成像揭示了两幅类星体图像之间存在透镜星系。根据斯隆数字巡天 (SDSS) 光谱中看到的吸收特征，我们确定透镜星系红移为 z = 0.1756。该透镜相当不寻常，因为其中一张类星体图像距离透镜星系中心仅 0.″22 ± 0.″07 (∼0.1 Reff)，光度模型表明该图像比 SIS 模型预测的要亮得多。该系统是在 SDSS 数据集中持续搜索强透镜类星体的过程中发现的。
We report the discovery of SDSS J115517.35+634622.0, a previously unknown gravitationally lensed quasar. The lens system exhibits two images of a z = 2.89 quasar, with an image separation of 1.″832 ± 0.″007. Near-IR imaging of the system reveals the presence of the lensing galaxy between the two quasar images. Based on absorption features seen in the Sloan Digital Sky Survey (SDSS) spectrum, we determine a lens galaxy redshift of z = 0.1756. The lens is rather unusual in that one of the quasar images is only 0.″22 ± 0.″07 (∼0.1 Reff) from the center of the lens galaxy, and photometric modeling indicates that this image is significantly brighter than predicted by a SIS model. This system was discovered in the course of an ongoing search for strongly lensed quasars in the data set from the SDSS.
斯隆数字巡天发现引力透镜类星体：SDSS J133222.62 034739.9
DOI：
--
发表时间：
2007
期刊：
The Astronomical Journal 133・1
影响因子：
--
作者：
Morokuma;Tomoki;et al.
通讯作者：
et al.