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An algorithm for preferential selection of spectroscopic targets in LEGUE

Carlin, Jeffrey L. and Lépine, Sébastien and Newberg, Heidi Jo and Deng, Li-Cai and Beers, Timothy C. and Chen, Yu-Qin and Christlieb, Norbert and Fu, Xiao-Ting and Gao, Shuang and Grillmair, Carl J. and Guhathakurta, Puragra and Han, Zhan-Wen and Hou, Jin-Liang and Lee, Hsu-Tai and Li, Jing and Liu, Chao and Liu, Xiao-Wei and Pan, Kai-Ke and Sellwood, J. A. and Wang, Hong-Chi and Yang, Fan and Yanny, Brian and Zhang, Yue-Yang and Zheng, Zheng and Zhu, Zi (2012) An algorithm for preferential selection of spectroscopic targets in LEGUE. Research in Astronomy and Astrophysics, 12 (7). pp. 755-771. ISSN 1674-4527.

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We describe a general target selection algorithm that is applicable to any survey in which the number of available candidates is much larger than the number of objects to be observed. This routine aims to achieve a balance between a smoothly-varying, well-understood selection function and the desire to preferentially select certain types of targets. Some target-selection examples are shown that illustrate different possibilities of emphasis functions. Although it is generally applicable, the algorithm was developed specifically for the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) survey that will be carried out using the Chinese Guo Shou Jing Telescope. In particular, this algorithm was designed for the portion of LEGUE targeting the Galactic halo, in which we attempt to balance a variety of science goals that require stars at fainter magnitudes than can be completely sampled by LAMOST. This algorithm has been implemented for the halo portion of the LAMOST pilot survey, which began in October 2011.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Carlin, Jeffrey L.0000-0002-3936-9628
Lépine, Sébastien0000-0002-2437-2947
Beers, Timothy C.0000-0003-4573-6233
Christlieb, Norbert0000-0002-4043-2727
Grillmair, Carl J.0000-0003-4072-169X
Guhathakurta, Puragra0000-0001-8867-4234
Liu, Chao0000-0001-7049-493X
Yanny, Brian0000-0002-9541-2678
Additional Information:© 2012 IOP Publishing. Received 2012 May 11; accepted 2012 June 16. Supported by the National Natural Science Foundation of China. We thank the referee, Sanjib Sharma, for helpful comments on the manuscript. This work was supported by the US National Science Foundation, through grant AST-09-37523, the National Natural Science Foundation of China (Grant Nos. 10573022, 10973015 and 11061120454) and the Chinese Academy of Sciences through grant GJHZ 200812. S. L. is supported by the US National Science Foundation grant AST-09-08419.
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
Chinese Academy of SciencesGJHZ 200812
Subject Keywords:surveys: LAMOST; Galaxy: halo; techniques: spectroscopic
Issue or Number:7
Classification Code:PACS: 95.80.+p; 98.35.Gi
Record Number:CaltechAUTHORS:20120831-114646638
Persistent URL:
Official Citation:An algorithm for preferential selection of spectroscopic targets in LEGUE Jeffrey L. Carlin et al 2012 Res. Astron. Astrophys. 12 755
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33778
Deposited By: Aucoeur Ngo
Deposited On:31 Aug 2012 19:43
Last Modified:14 Nov 2019 22:55

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