THE LAMOST SURVEY OF BACKGROUND QUASARS IN THE VICINITY OF THE ANDROMEDA AND TRIANGULUM GALAXIES. II. RESULTS FROM THE COMMISSIONING OBSERVATIONS AND THE PILOT SURVEYS

Zhi-Ying Huo(Chinese Academy of Sciences), Xiaowei Liu(Peking University), Maosheng Xiang(Peking University), Haibo Yuan(Peking University), Yang Huang(Peking University), Huihua Zhang(Peking University), Lin Yan(California Institute of Technology), Zhongrui Bai(Chinese Academy of Sciences), Jian-Jun Chen(Chinese Academy of Sciences), Chen, Xiao-Yan(Chinese Academy of Sciences), Jiaru Chu(University of Science and Technology of China), Yaoquan Chu(University of Science and Technology of China), Xiangqun Cui(Chinese Academy of Sciences), Bing Du(Chinese Academy of Sciences), Yonghui Hou(Chinese Academy of Sciences), H.B Hu(University of Science and Technology of China), Zhongwen Hu(Chinese Academy of Sciences), Lei Jia(Chinese Academy of Sciences), Fanghua Jiang(Chinese Academy of Sciences), Ya-Juan Lei(Chinese Academy of Sciences), Aihua Li(Chinese Academy of Sciences), Guangwei Li(Chinese Academy of Sciences), Guo-Ping Li(Chinese Academy of Sciences), Jian Li(Chinese Academy of Sciences), Xinnan Li(Chinese Academy of Sciences), Yan Li(Shanghai Astronomical Observatory), Yeping Li(Chinese Academy of Sciences), Genrong Liu(Chinese Academy of Sciences), Zhigang Liu(University of Science and Technology of China), Qi-Shuai Lu(Chinese Academy of Sciences), A-Li Luo(Chinese Academy of Sciences), Yu Luo(Chinese Academy of Sciences), Li Men(Chinese Academy of Sciences), Jijun Ni(Chinese Academy of Sciences), Yongjun Qi(Chinese Academy of Sciences), Zhaoxiang Qi(Shanghai Astronomical Observatory), Jianrong Shi(Chinese Academy of Sciences), Huoming Shi(Chinese Academy of Sciences), Shiwei Sun(Chinese Academy of Sciences), Zhenghong Tang(Shanghai Astronomical Observatory), Yuan Tian(Chinese Academy of Sciences), Liangping Tu(Chinese Academy of Sciences), Dan Wang(Chinese Academy of Sciences), Feng-Fei Wang(Chinese Academy of Sciences), Gang Wang(Chinese Academy of Sciences), Jianing Wang(Chinese Academy of Sciences), Lei Wang(Chinese Academy of Sciences), Shuqing Wang(Chinese Academy of Sciences), You Wang(Chinese Academy of Sciences), Yuefei Wang(Chinese Academy of Sciences), Mingzhi Wei(Chinese Academy of Sciences), Yue Wu(Chinese Academy of Sciences), Xiang-Xiang Xue(Chinese Academy of Sciences), Zhengqiu Yao(Chinese Academy of Sciences), Yong Yu(Shanghai Astronomical Observatory), Hui Yuan(Chinese Academy of Sciences), Chao Zhai(University of Science and Technology of China), En-Peng Zhang(Chinese Academy of Sciences), Haotong Zhang(Chinese Academy of Sciences), Jiannan Zhang(Chinese Academy of Sciences), Wei Zhang(Chinese Academy of Sciences), Yanxia Zhang(Chinese Academy of Sciences), Yong Zhang(Chinese Academy of Sciences), Zhenchao Zhang(Chinese Academy of Sciences), Gang Zhao(Chinese Academy of Sciences), Ming Zhao(Shanghai Astronomical Observatory), Yongheng Zhao(Chinese Academy of Sciences), Fang Zhou(Chinese Academy of Sciences), Xin-Lin Zhou(Chinese Academy of Sciences), Yongtian Zhu(Chinese Academy of Sciences), Sicheng Zou(Chinese Academy of Sciences)
Unknown
June 1, 2013
Cited by 18

Abstract

We present new quasars discovered in the vicinity of the Andromeda and Triangulum galaxies with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, also named the Guoshoujing Telescope, during the 2010 and 2011 observational seasons. Quasar candidates are selected based on the available Sloan Digital Sky Survey, Kitt Peak National Observatory 4 m telescope, Xuyi Schmidt Telescope Photometric Survey optical, and Wide-field Infrared Survey Explorer near-infrared photometric data. We present 509 new quasars discovered in a stripe of similar to 135 deg(2) from M31 to M33 along the Giant Stellar Stream in the 2011 pilot survey data sets, and also 17 new quasars discovered in an area of similar to 100 deg(2) that covers the central region and the southeastern halo of M31 in the 2010 commissioning data sets. These 526 new quasars have i magnitudes ranging from 15.5 to 20.0, redshifts from 0.1 to 3.2. They represent a significant increase of the number of identified quasars in the vicinity of M31 and M33. There are now 26, 62, and 139 known quasars in this region of the sky with i magnitudes brighter than 17.0, 17.5, and 18.0, respectively, of which 5, 20, and 75 are newly discovered. These bright quasars provide an invaluable collection with which to probe the kinematics and chemistry of the interstellar/intergalactic medium in the Local Group of galaxies. A total of 93 quasars are now known with locations within 2.degrees 5 of M31, of which 73 are newly discovered. Tens of quasars are now known to be located behind the Giant Stellar Stream, and hundreds are behind the extended halo and its associated substructures of M31. The much enlarged sample of known quasars in the vicinity of M31 and M33 can potentially be utilized to construct a perfect astrometric reference frame to measure the minute proper motions (PMs) of M31 and M33, along with the PMs of substructures associated with the Local Group of galaxies. Those PMs are some of the most fundamental properties of the Local Group.

Related Papers

No related papers found

Powered by citation graph analysis