NAOC Open IR
Chromospheric activity of periodic variable stars (including eclipsing binaries) observed in DR2 LAMOST stellar spectral survey
Zhang, Liyun1; Lu, Hongpeng1; Han, Xianming L.1,2,3; Jiang, Linyan1; Li, Zhongmu4; Zhang, Yong5; Hou, Yonghui5; Wang, Yuefei5; Cao, Zihuang6
2018-05-01
Source PublicationNEW ASTRONOMY
ISSN1384-1076
Volume61Pages:36-58
AbstractThe LAMOST spectral survey provides a rich databases for studying stellar spectroscopic properties and chromospheric activity. We cross-matched a total of 105,287 periodic variable stars from several photometric surveys and databases (CSS, LINEAR, Kepler, a recently updated eclipsing star catalogue, ASAS, NSVS, some part of SuperWASP survey, variable stars from the Tsinghua University-NAOC Transient Survey, and other objects from some new references) with four million stellar spectra published in the LAMOST data release 2 (DR2). We found 15,955 spectra for 11,469 stars (including 5398 eclipsing binaries). We calculated their equivalent widths (EWs) of their H-alpha, H-beta, H-gamma, H-delta and Ca ii H-alpha lines. Using the H,, line EW, we found 447 spectra with emission above continuum for a total of 316 stars (178 eclipsing binaries). We identified 86 active stars (including 44 eclipsing binaries) with repeated LAMOST spectra. A total of 68 stars (including 34 eclipsing binaries) show chromospheric activity variability. We also found LAMOST spectra of 12 cataclysmic variables, five of which show chromospheric activity variability. We also made photometric follow-up studies of three short period targets (DY CVn, HAT-192-0001481, and LAMOST J164933.24 + 141255.0) using the Xinglong 60-cm telescope and the SARA 90-cm and 1-m telescopes, and obtained new BVRI CCD light curves. We analyzed these light curves and obtained orbital and starspot parameters. We detected the first flare event with a huge brightness increase of more than about 1.5 magnitudes in R filter in LAMOST J164933.24 + 141255.0.
KeywordStars: chromospheres Stars: binaries: eclipsing Stars: activity Stars: variables
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission
DOI10.1016/j.newast.2017.11.007
WOS KeywordDIGITAL SKY SURVEY ; DATA RELEASE ; MAGNETIC ACTIVITY ; TELESCOPE LAMOST ; AUTOMATED SURVEY ; CATALOG ; CONFIGURATION ; SUPERWASP ; SUBDWARFS ; EDITION
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[11263001] ; National Natural Science Foundation of China (NSFC)[U1431114] ; National Natural Science Foundation of China (NSFC)[U1631236] ; National Natural Science Foundation of China (NSFC)[U1631109] ; Chinese Academy of Sciences (CAS)[U1431114] ; Chinese Academy of Sciences (CAS)[U1631236] ; Chinese Academy of Sciences (CAS)[U1631109] ; National Development and Reform Commission
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Development and Reform Commission ; National Development and Reform Commission
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000424180000007
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37222
Collection中国科学院国家天文台
Corresponding AuthorZhang, Liyun
Affiliation1.Guizhou Univ, Coll Phys, Dept Phys & Astron, Guiyang 550025, Guizhou, Peoples R China
2.Butler Univ, Dept Phys & Astron, Indianapolis, IN 46208 USA
3.Butler Univ, SARA, Indianapolis, IN 46208 USA
4.Dali Univ, Inst Astron & Hist Sci & Technol, Dali 671003, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
6.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Liyun,Lu, Hongpeng,Han, Xianming L.,et al. Chromospheric activity of periodic variable stars (including eclipsing binaries) observed in DR2 LAMOST stellar spectral survey[J]. NEW ASTRONOMY,2018,61:36-58.
APA Zhang, Liyun.,Lu, Hongpeng.,Han, Xianming L..,Jiang, Linyan.,Li, Zhongmu.,...&Cao, Zihuang.(2018).Chromospheric activity of periodic variable stars (including eclipsing binaries) observed in DR2 LAMOST stellar spectral survey.NEW ASTRONOMY,61,36-58.
MLA Zhang, Liyun,et al."Chromospheric activity of periodic variable stars (including eclipsing binaries) observed in DR2 LAMOST stellar spectral survey".NEW ASTRONOMY 61(2018):36-58.
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