Key Laboratory of Optical Astronomy;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Department of Astronomy;
Beijing Normal University;
Beijing 100875;
China;
Key Laboratory of Space Astronomy and Technology;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101 China;
Yunnan Observatories;
Chinese Academy of Sciences;
Kunming 650011;
China;
Nanjing Institute of Astronomical Optics&Technology;
National Astronomical Observatories;
Chinese Academy of Sciences;
Nanjing 210042;
China;
School of Astronomy and Space Science;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
methods:data analysis; techniques:radial velocities; stars:statistics; catalogs; surveys;