DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY

	DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY
	Zhang, Yue-Yang 1,2; Deng, Li-Cai1 ; Liu, Chao1 ; Lepine, Sebastien 3; Newberg, Heidi Jo 4; Carlin, Jeffrey L.4; Carrell, Kenneth 1; Yang, Fan1,2 ; Gao, Shuang 1; Xu, Yan1
刊名	ASTRONOMICAL JOURNAL
	2013-08-01
卷号	146 期号:2
关键词	atlases catalogs surveys white dwarfs
英文摘要	A total of similar to 640,000 objects from the LAMOST pilot survey have been publicly released. In this work, we present a catalog of DA white dwarfs (DAWDs) from the entire pilot survey. We outline a new algorithm for the selection of white dwarfs (WDs) by fitting Sersic profiles to the Balmer H beta, H gamma, and H delta lines of the spectra, and calculating the equivalent width of the Ca II K line. Two thousand nine hundred sixty-four candidates are selected by constraining the fitting parameters and the equivalent width of the Ca II Kline. All the spectra of candidates are visually inspected. We identify 230 DAWDs (59 of which are already included in the Villanova and SDSS WD catalogs), 20 of which are DAWDs with non-degenerate companions. In addition, 128 candidates are classified as DAWDs/subdwarfs, which means the classifications are ambiguous. The result is consistent with the expected DAWD number estimated based on the LEGUE target selection algorithm.
收录类别	SCI
语种	英语
WOS记录号	WOS:000321841100016
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6054]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Amer Museum Nat Hist, Dept Astrophys, Div Phys Sci, New York, NY 10024 USA 4.Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA 5.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yue-Yang,Deng, Li-Cai,Liu, Chao,et al. DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY[J]. ASTRONOMICAL JOURNAL,2013,146(2).
APA	Zhang, Yue-Yang.,Deng, Li-Cai.,Liu, Chao.,Lepine, Sebastien.,Newberg, Heidi Jo.,...&Jin, Ge.(2013).DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY.ASTRONOMICAL JOURNAL,146(2).
MLA	Zhang, Yue-Yang,et al."DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY".ASTRONOMICAL JOURNAL 146.2(2013).