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White dwarfs identified in LAMOST DR 2
Guo, Jincheng1,2; Zhao, Jingkun1; Tziamtzis, Anestis3; Liu, Jifeng1; Li LF(李立芳)4,5; Zhang, Yong6; Hou, Yonghui6; Wang, Yuefei6
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-12-11
Volume454Issue:3Pages:2787-2797
DOI10.1093/mnras/stv2104
Contribution Rank第4完成单位
Indexed BySCI
KeywordWhite Dwarfs
Abstract

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.

Funding ProjectNational Science Foundation of China (NSFC)[NSFC-11333004] ; National Science Foundation of China (NSFC)[U1431106] ; National Science Foundation of China (NSFC)[11373063] ; National Science Foundation of China (NSFC)[11390374] ; National Science Foundation of China (NSFC)[XDB09010202] ; Chinese Academy of Sciences ; National Development and Reform Commission
Funding OrganizationNational Science Foundation of China (NSFC)(NSFC-11333004,U1431106,11373063,11390374,XDB09010202) ; Chinese Academy of Sciences ; National Development and Reform Commission
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000368000400041
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL-SKY-SURVEY ; COMMON-ENVELOPE BINARIES ; MAIN-SEQUENCE BINARIES ; GASEOUS DEBRIS DISC ; FINAL MASS RELATION ; DATA RELEASE ; PILOT SURVEY ; SPECTROSCOPIC ANALYSIS ; LUMINOSITY FUNCTION ; POPULATION SYNTHESIS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9407
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorGuo, Jincheng
Affiliation1.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
Recommended Citation
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.,Li LF.,...&Wang, Yuefei.(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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