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LAMOST Experiment for Galactic Understanding and Exploration (LEGUE)— The survey’s science plan

Deng, Li-Cai and Newberg, Heidi Jo and Liu, Chao and Carlin, Jeffrey L. and Beers, Timothy C. and Chen, Li and Chen, Yu-Qin and Christlieb, Norbert and Grillmair, Carl J. and Guhathakurta, Puragra and Han, Zhan-Wen and Hou, Jin-Liang and Lee, Hsu-Tai and Lépine, Sébastien and Li, Jing and Liu, Xiao-Wei and Pan, Kai-Ke and Sellwood, J. A. and Wang, Bo and Wang, Hong-Chi and Yang, Fan and Yanny, Brian and Zhang, Hao-Tong and Zhang, Yue-Yang and Zheng, Zheng and Zhu, Zi (2012) LAMOST Experiment for Galactic Understanding and Exploration (LEGUE)— The survey’s science plan. Research in Astronomy and Astrophysics, 12 (7). pp. 735-754. ISSN 1674-4527.

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We describe the current plans for a spectroscopic survey of millions of stars in the Milky Way galaxy using the Guo Shou Jing Telescope (GSJT, formerly called the Large sky Area Multi-Object fiber Spectroscopic Telescope — LAMOST). The survey will obtain spectra for 2.5 million stars brighter than r < 19 during dark/grey time, and 5 million stars brighter than r < 17 or J < 16 on nights that are moonlit or have low transparency. The survey will begin in the fall of 2012, and will run for at least four years. The telescope's design constrains the optimal declination range for observations to 10° < δ < 50°, and site conditions lead to an emphasis on stars in the direction of the Galactic anticenter. The survey is divided into three parts with different target selection strategies: disk, anticenter, and spheroid. The resulting dataset will be used to study the merger history of the Milky Way, the substructure and evolution of the disks, the nature of the first generation of stars through identification of the lowest metallicity stars, and star formation through study of open clusters and OB associations. Detailed design of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) survey will be completed in summer 2012, after a review of the results of the pilot survey.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Liu, Chao0000-0001-7049-493X
Carlin, Jeffrey L.0000-0002-3936-9628
Beers, Timothy C.0000-0003-4573-6233
Christlieb, Norbert0000-0002-4043-2727
Grillmair, Carl J.0000-0003-4072-169X
Guhathakurta, Puragra0000-0001-8867-4234
Lépine, Sébastien0000-0002-2437-2947
Yanny, Brian0000-0002-9541-2678
Additional Information:© 2012 IOP Publishing. Received May 11 2012; accepted June 16 2012. Supported by the National Natural Science Foundation of China. We thank the guest editor of this mini-volume and the referee of this paper, Joss Bland-Hawthorn for helpful comments on the manuscript. This work is partially supported by the National Natural Science Foundation of China (Grant Nos. 10573022, 10973015, 11061120454 and 11243003) and the US National Science Foundation through grant AST-09-37523.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
National Natural Science Foundation of China10573022
National Natural Science Foundation of China10973015
National Natural Science Foundation of China11061120454
National Natural Science Foundation of China11243003
Subject Keywords:techniques: spectroscopic; Galaxy: structure; Galaxy: evolution; Galaxy: kinematics and dynamics; Galaxy: disk; Galaxy: halo—spectroscopy
Issue or Number:7
Classification Code:PACS: 95.80.+p; 98.35.Bd; 98.35.Df; 98.35.Ac
Record Number:CaltechAUTHORS:20120831-125858377
Persistent URL:
Official Citation:LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) — The survey's science plan Li-Cai Deng et al 2012 Res. Astron. Astrophys. 12 735
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33781
Deposited By: Aucoeur Ngo
Deposited On:31 Aug 2012 21:26
Last Modified:14 Nov 2019 22:54

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