Quasars in the Galactic Anti-Center Area from LAMOST DR3  

作　　者：Zhi-Ying Huo Xiao-Wei Liu Jian-Rong Shi Mao-Sheng Xiang Yang Huang Hai-Bo Yuan Jian-Nan Zhang Wei Zhang Jian-Ling Wang Yu-Zhong Wu Zi-Huang Cao Yong Zhang Yong-Hui Hou Yue-Fei Wang 

机构地区：[1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Department of Astronomy, Peking University, Beijing 100871, China [3]Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China [4]Department of Astronomy, Beijing Normal University, Beijing 100875, China [5]Nanjing Institute of Astronomical Optics & Technology, Chinese Academy of Sciences, Nanjing 210042, China

出　　处：《Research in Astronomy and Astrophysics》2017年第4期7-10,共4页天文和天体物理学研究（英文版）

基　　金：supported by the National Key Basic Research Program of China(2014CB845705);the National Natural Science Foundation of China(Grant Nos.11403038,11473001 and U1531244);The Guo Shou Jing Telescope(the Large Sky Area Multi-Object Fiber Spectroscopic Telescope,LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences;Funding for the project has been provided by the National Development and Reform Commission;LAMOST is operated and managed by National Astronomical Observatories,Chinese Academy of Sciences

摘　　要：Abstract We present a sample of quasars discovered in an area near the Galactic Anti-Center covering 150°≤l≤ 210° and ｜b｜ ≤ 30°, based on LAMOST Data Release 3 （DR3）. This sample contains 151 spectroscopically confirmed quasars. Among them 80 are newly discovered with LAMOST. All these quasars are very bright, with i magnitudes peaking around 17.5 mag. All the new quasars were discovered serendipitously from objects that were originally targeted with LAMOST as stars having bluer colors, except for a few candidates targeted as variable, young stellar objects. This bright quasar sample at low Galactic latitudes will help fill the gap in the spatial distribution of known quasars near the Galactic disk that are used to construct an astrometric reference frame for the purpose of accurate proper motion measurements that can be applied to, for example, Gala. They are also excellent tracers to probe the kinematics and chemistry of the interstellar medium in the Milky Way disk and halo via absorption line spectroscopy.Abstract We present a sample of quasars discovered in an area near the Galactic Anti-Center covering 150°≤l≤ 210° and ｜b｜ ≤ 30°, based on LAMOST Data Release 3 （DR3）. This sample contains 151 spectroscopically confirmed quasars. Among them 80 are newly discovered with LAMOST. All these quasars are very bright, with i magnitudes peaking around 17.5 mag. All the new quasars were discovered serendipitously from objects that were originally targeted with LAMOST as stars having bluer colors, except for a few candidates targeted as variable, young stellar objects. This bright quasar sample at low Galactic latitudes will help fill the gap in the spatial distribution of known quasars near the Galactic disk that are used to construct an astrometric reference frame for the purpose of accurate proper motion measurements that can be applied to, for example, Gala. They are also excellent tracers to probe the kinematics and chemistry of the interstellar medium in the Milky Way disk and halo via absorption line spectroscopy.

关 键 词：Galaxy： disk -- quasars： emission lines -- reference systems -- proper motions -- ISM：kinematics and dynamics 

分 类 号：P158[天文地球—天文学] TH751[机械工程—仪器科学与技术]