CALIBRATION OF LAMOST STELLAR SURFACE GRAVITIES USING THE KEPLER ASTEROSEISMIC DATA

doi:10.3847/0004-6256/152/1/6

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	CALIBRATION OF LAMOST STELLAR SURFACE GRAVITIES USING THE KEPLER ASTEROSEISMIC DATA
	Wang,Liang 1,4; Wang,Wei 1,3; Wu,Yue 1; Zhao,Gang 1; Li,Yinbi 1; Luo,Ali 1; Liu,Chao 1; Zhang,Yong 2; Hou,Yonghui 2; Wang,Yuefei 2
刊名	The Astronomical Journal
	2016-06-14
卷号	152 期号:1
关键词	asteroseismology stars: fundamental parameters techniques: spectroscopic
ISSN号	0004-6256
DOI	10.3847/0004-6256/152/1/6
英文摘要	ABSTRACT Asteroseismology is a powerful tool to precisely determine the evolutionary status and fundamental properties of stars. With the unprecedented precision and nearly continuous photometric data acquired by the NASA Kepler mission, parameters of more than 104 stars have been determined nearly consistently. However, most studies still use photometric effective temperatures (Teff) and metallicities ([Fe/H]) as inputs, which are not sufficiently accurate as suggested by previous studies. We adopted the spectroscopic Teff and [Fe/H] values based on the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) low-resolution spectra (R ? 1800), and combined them with the global oscillation parameters to derive the physical parameters of a large sample of stars. Clear trends were found between and spectroscopic Teff as well as log g, which may result in an overestimation of up to 0.5 dex for the log g values of giants in the LAMOST catalog. We established empirical calibration relations for the log g values of dwarfs and giants. These results can be used for determining the precise distances to these stars based on their spectroscopic parameters.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-6256-152-1-6
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/36279]
专题	中国科学院国家天文台
作者单位	1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, A20, Datun Road, Chaoyang District, Beijing 100012, China; lwang@nao.cas.cn, wangwei@nao.cas.cn, gzhao@nao.cas.cn 2.Nanjing Institute of Astronomical Optics & Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing 210042, China 3.Chinese Academy of Sciences South America Center for Astronomy, Camino El Observatorio 1515, Las Condes, Santiago, Chile 4.Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching, Germany
推荐引用方式 GB/T 7714	Wang,Liang,Wang,Wei,Wu,Yue,et al. CALIBRATION OF LAMOST STELLAR SURFACE GRAVITIES USING THE KEPLER ASTEROSEISMIC DATA[J]. The Astronomical Journal,2016,152(1).
APA	Wang,Liang.,Wang,Wei.,Wu,Yue.,Zhao,Gang.,Li,Yinbi.,...&Cao,Zihuang.(2016).CALIBRATION OF LAMOST STELLAR SURFACE GRAVITIES USING THE KEPLER ASTEROSEISMIC DATA.The Astronomical Journal,152(1).
MLA	Wang,Liang,et al."CALIBRATION OF LAMOST STELLAR SURFACE GRAVITIES USING THE KEPLER ASTEROSEISMIC DATA".The Astronomical Journal 152.1(2016).