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Title:
The identification of K giant stars in LAMOST pilot survey
Authors:
Liu, Chao; Yang, Fan; Deng, Licai; Xu, Yan; Cui, Wenyuan; Xue, Xiangxiang; Gao, Shuang; Zhang, Yueyang; Xin, Yu
Affiliation:
AA(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AB(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AC(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AD(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AE(Department of Physics, Hebei Normal University, 20 Nanerhuan Dong Road, Shijiazhuang 050024, China), AF(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AG(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AH(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China ), AI(Key Laboratory of Optical Astronomy, National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, 100012, Beijing, China )
Publication:
Setting the scene for Gaia and LAMOST, Proceedings of the International Astronomical Union, IAU Symposium, Volume 298, pp. 425-425
Publication Date:
01/2014
Origin:
CUP
Keywords:
methods: data analysis, stars: fundamental parameters (classification), Galaxy: structure
Abstract Copyright:
(c) 2014: Copyright © International Astronomical Union 2014
DOI:
10.1017/S1743921313006911
Bibliographic Code:
2014IAUS..298..425L

Abstract

A support vector machine (SVM) method is applied to select K giant stars directly from the spectral features of LAMOST spectra. The performance of the algorithm is assessed using the MILES library. It shows that the completeness of the K giant stars is 87% with only about 6% dwarf contamination. This allows us to select 18,013 K giant stars at |b|>20° and 38,108 at |b|<20° from LAMOST pilot survey data.

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Physics
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