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White dwarfs identified in LAMOST DR 2

文献类型：期刊论文

作者Guo, Jincheng1,2; Zhao, Jingkun1; Tziamtzis, Anestis3; Liu, Jifeng1; Li LF(李立芳)4,5; Zhang, Yong6; Hou, Yonghui6; Wang, Yuefei6; Li LF(李立芳)
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2015-12-11
卷号454期号:3页码:2787-2797
ISSN号0035-8711
关键词white dwarfs
通讯作者Guo, JC (reprint author), Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
产权排序第四完成单位
英文摘要Here we present a catalogue of 1056 spectroscopically identified hydrogen-dominated white dwarfs (DAWDs), 34 helium-dominated white dwarfs (DBWDs) and 276 white dwarf main sequence (WDMS) binaries from the Large sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey data release 2 (DR2). 383 DAWDs, 4 DBWDs and 138 WDMSs are new identifications after cross-match with literature. There are similar to 4100 k spectra in total from DR 2. The low ratio of white dwarfs found in LAMOST is attributed to biased selection of LAMOST input catalogue and much brighter targets relative to stars observed in Sloan Digital Sky Survey. In this paper, a new DAWD selection method is adopted as a new attempt and supplement to the traditional methods. The effective temperature, surface gravity, mass, cooling age and distance of high signal-to-noise DAWDs are estimated. The peak of the mass distribution is found to be similar to 0.6 M-circle dot, which is consistent with previous work. The parameters of WDMS binaries are also provided in this paper. As the foundation of our future work, which is to identify more WDs with debris disc, WDs found in LAMOST showed a lot of potential. Interesting infrared-excess WDs will be reported in our forthcoming paper.
学科主题Astronomy & Astrophysics
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]DIGITAL-SKY-SURVEY ; COMMON-ENVELOPE BINARIES ; MAIN-SEQUENCE BINARIES ; GASEOUS DEBRIS DISC ; FINAL MASS RELATION ; DATA RELEASE ; PILOT SURVEY ; SPECTROSCOPIC ANALYSIS ; LUMINOSITY FUNCTION ; POPULATION SYNTHESIS
收录类别SCI
原文出处http://mnras.oxfordjournals.org/content/454/3/2787
语种英语
WOS记录号WOS:000368000400041
源URL[http://ir.ynao.ac.cn/handle/114a53/9407]  
专题云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.Department of Astronomy, University of Chinese Academy of Sciences, Beijing 100049, China
3.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
4.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China
5.Key Laboratory for the Structure, and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China
6.Nanjing Institute of Astronomical Optics & Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing 210042, China
推荐引用方式
GB/T 7714		 Guo, Jincheng,Zhao, Jingkun,Tziamtzis, Anestis,et al. White dwarfs identified in LAMOST DR 2[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,454(3):2787-2797.
APA Guo, Jincheng.,Zhao, Jingkun.,Tziamtzis, Anestis.,Liu, Jifeng.,李立芳.,...&Li LF.(2015).White dwarfs identified in LAMOST DR 2.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,454(3),2787-2797.
MLA Guo, Jincheng,et al."White dwarfs identified in LAMOST DR 2".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 454.3(2015):2787-2797.

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来源：云南天文台

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