Lensing clusters of galaxies in the SDSS-Ⅲ  

作　　者：Zhong-Lue Wen Jin-Lin Han Yun-Ying Jiang 

机构地区：[1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

出　　处：《Research in Astronomy and Astrophysics》2011年第10期1185-1198,共14页天文和天体物理学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos. 10821061, 10833003 and 11103032);Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences and the National Key Basic Research Science Foundation of China (2007CB815403);Funding for SDSS-III has been provided by the Alfred P.Sloan Foundation,the Participating Institutions,the National Science Foundation and the U.S.Department of Energy

摘　　要：We identify new strong lensing clusters of galaxies from the Sloan Digital Sky Survey Ⅲ （SDSS DR8） by visually inspecting color images of a large sample of clusters of galaxies. We find 68 new clusters showing giant arcs in addition to 30 known lensing systems. Among 68 cases, 13 clusters are ＂almost certain＂ lensing systems with tangential giant arcs, 22 clusters are ＂probable＂ and 31 clusters are ＂pos- sible＂ lensing systems. We also find two exotic systems with blue rings. The giant arcs have angular separations of 2.0jj - 25.7j~ from the bright central galaxies. We note that the rich clusters are more likely to be lensing systems and the separations between the arcs and the central galaxies increase with cluster richness.We identify new strong lensing clusters of galaxies from the Sloan Digital Sky Survey Ⅲ （SDSS DR8） by visually inspecting color images of a large sample of clusters of galaxies. We find 68 new clusters showing giant arcs in addition to 30 known lensing systems. Among 68 cases, 13 clusters are ＂almost certain＂ lensing systems with tangential giant arcs, 22 clusters are ＂probable＂ and 31 clusters are ＂pos- sible＂ lensing systems. We also find two exotic systems with blue rings. The giant arcs have angular separations of 2.0jj - 25.7j~ from the bright central galaxies. We note that the rich clusters are more likely to be lensing systems and the separations between the arcs and the central galaxies increase with cluster richness.

关 键 词：GALAXIES CLUSTERS general -- gravitational lensing 

分 类 号：P208[天文地球—地图制图学与地理信息工程] P157.8[天文地球—测绘科学与技术]