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《天文和天体物理学研究(英文版)》 2012-07
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LAMOST spectral survey — An overview

Gang Zhao 1 , Yong-Heng Zhao 1 , Yao-Quan Chu 1 , 2 , Yi-Peng Jing 3 and Li-Cai Deng 1 1 Key Laboratory for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;2 University of Science and Technology of China, Hefei 230026, China 3 Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China  
LAMOST (Large sky Area Multi-Object fiber Spectroscopic Telescope) is a Chinese national scientific research facility operated by National Astronomical Observatories, Chinese Academy of Sciences (NAOC). After two years of commis-sioning beginning in 2009, the telescope, instruments, software systems and operations are nearly ready to begin the main science survey. Through a spectral survey of millions of objects in much of the northern sky, LAMOST will enable research in a number of contemporary cutting edge topics in astrophysics, such as discovery of the first generation stars in the Galaxy, pinning down the formation and evolution history of galaxies – especially the Milky Way and its central massive black hole, and looking for signatures of the distribution of dark matter and possible sub-structures in the Milky Way halo. To maximize the scientific potential of the facility, wide national participation and international collaboration have been emphasized. The survey has two major components: the LAMOST ExtraGAlactic Survey (LEGAS) and the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE). Until LAMOST reaches its full capability, the LEGUE portion of the survey will use the available ob- serving time, starting in 2012. An overview of the LAMOST project and the survey that will be carried out in the next five to six years is presented in this paper. The sci- ence plan for the whole LEGUE survey, instrumental specifications, site conditions, and the descriptions of the current on-going pilot survey, including its footprints and target selection algorithm, will be presented as separate papers in this volume.
【Fund】: the National Natural Science Foundation of China (GrantNos. 10573022 10973015 and 11061120454);; that Heidi J. Newberg from RPI and her team PLUS (Participating LAMOST US) have made substantial contributions in designing the survey under the support of the US National Science Foundation through grant AST-09-37523
【CateGory Index】: P129
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