SDSS J1640+1932: a spectacular galaxy-quasar strong lens system
文献类型：期刊论文
| 作者 | Wang, Lin1,2 ; Shu, Yiping2; Li, Ran1,2; Zheng, Zheng1; Wen, Zhonglue2; Liu, Guilin3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2017-07-01 |
| 卷号 | 468期号:3页码:3757-3763 |
| 关键词 | gravitational lensing: strong Galaxy: halo galaxies: structure cosmology: observations |
| 英文摘要 | We present Canada-France-Hawaii Telescope (CFHT) MegaCam observations of a galaxy-quasar strong gravitational lens system, SDSS J1640+1932. This system, located at z = 0.195 (foreground elliptical galaxy) and z = 0.778 (background quasar), was first visually identified by us in the Sloan Digital Sky Survey data base. Our CFHT imaging with an angular resolution of 0.7 arcsec clearly resolves four lensed images and a nearly complete Einstein ring. Modelling the system with a singular isothermal ellipsoid total mass distribution, we find an Einstein radius of 2.49"(+0.063)(-0.049) enclosing an inferred mass of 7.25(-0.29)(+0.37) x 10(11) M-circle dot. The quasar and its host galaxy have been magnified by a factor of 23, and the time delay relative to the leading image is determined to be 23.4-25.2 d. These parameters vary minimally when our model is fitted to the g-, r- or i-band images. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL-SKY-SURVEY ; MASS-DENSITY PROFILE ; SPECTROSCOPICALLY SELECTED SAMPLE ; GRAVITATIONAL LENS ; ACS SURVEY ; DATA RELEASE ; ADAPTIVE OPTICS ; DARK ENERGY ; TIME DELAYS ; EVOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000402808700098 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8805]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 3.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lin,Shu, Yiping,Li, Ran,et al. SDSS J1640+1932: a spectacular galaxy-quasar strong lens system[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(3):3757-3763. |
| APA | Wang, Lin,Shu, Yiping,Li, Ran,Zheng, Zheng,Wen, Zhonglue,&Liu, Guilin.(2017).SDSS J1640+1932: a spectacular galaxy-quasar strong lens system.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(3),3757-3763. |
| MLA | Wang, Lin,et al."SDSS J1640+1932: a spectacular galaxy-quasar strong lens system".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.3(2017):3757-3763. |
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来源：国家天文台
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