YNAO OpenIR  > 中国科学院天体结构与演化重点实验室
Magnetic activity and orbital periods of five low-mass eclipsing binaries
Zhang, Li-Yun1,2; Pi, Qing-feng1,2; Yang, Yuan-Gui3
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2014-08-11
Volume442Issue:3Pages:2620-2636
DOI10.1093/mnras/stu964
Indexed BySCI
KeywordBinaries: Eclipsing Stars: Individual: Nsvs 02502726 Stars: Individual: Nsvs 06550671 Stars: Individual: Nsvs 11868841 Stars: Individual: Nsvs 07453183 Stars: Individual: Nsvs 10653195
Abstract

We report 15 new VRI light curves of five low-mass eclipsing binaries (NSVS 02502726, NSVS 07453183, NSVS 11868841, NSVS 06550671 and NSVS 10653195) that were observed between 2010 and 2012. We analysed our new data together with three published spectroscopic observations and seven published light curves using a modified version of the Wilson-Devinney program. Orbital solutions of the five low-mass eclipsing binaries were revised and new star-spot parameters were obtained. We found that spot locations on the five low-mass eclipsing binaries changed over several years. However, the star-spots for NSVS 07453183 and NSVS 06550671 were stable for several months. More interestingly, for NSVS 02502726, the spots within a star-spot longitude region of 180A degrees-360A degrees indicated a magnetic activity cycle of 5.9(+/- 0.2) yr. Moreover, we detected the first flare-like event on NSVS 07453183 at phase 0.39. The observations of the chromospheric activity indicators (H beta and H gamma lines) revealed that NSVS 10653195 and NSVS 06550671 were active. For NSVS 02502726, we found a weak continuous secular decrease at a smaller rate of dp/dt = -2.1(0.8) x 10(-7) d yr(-1) than the previous result. For NSVS 07453183, the O-C times appeared to increase at cycle 6000, and this was followed by a decrease at cycle 6500.

Funding ProjectGuiZhou natural Science Foundation[20092263] ; Joint Fund of Astronomy of the National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS)[10978010, 11263001, U1231102] ; Open Project Program of the Key Laboratory of Optical Astronomy ; NAOC ; CAS
Funding OrganizationGuiZhou natural Science Foundation(20092263) ; Joint Fund of Astronomy of the National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS)(10978010,11263001,U1231102) ; Open Project Program of the Key Laboratory of Optical Astronomy ; NAOC ; CAS
Language英语
Subject Area天文学 ; 恒星与银河系
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:000339924300055
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordRS-CANUM-VENATICORUM ; TERM STARSPOT EVOLUTION ; ACTIVITY CYCLE ; CHROMOSPHERIC ACTIVITY ; ABSOLUTE DIMENSIONS ; RT ANDROMEDAE ; YY GEMINORUM ; H-ALPHA ; DIFFERENTIAL ROTATION ; CIRCUMSTELLAR MATTER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9438
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Li-Yun
Affiliation1.Department of Physics, College of Science, Guizhou University and NAOC-GZU-Sponsored Center for Astronomy, Guizhou University, Guiyang 550025, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
3.School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, Anhui Province, People's Republic of China
Recommended Citation
GB/T 7714
Zhang, Li-Yun,Pi, Qing-feng,Yang, Yuan-Gui. Magnetic activity and orbital periods of five low-mass eclipsing binaries[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,442(3):2620-2636.
APA Zhang, Li-Yun,Pi, Qing-feng,&Yang, Yuan-Gui.(2014).Magnetic activity and orbital periods of five low-mass eclipsing binaries.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,442(3),2620-2636.
MLA Zhang, Li-Yun,et al."Magnetic activity and orbital periods of five low-mass eclipsing binaries".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 442.3(2014):2620-2636.
Files in This Item:
File Name/Size DocType Version Access License
Magnetic activity an(2024KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Li-Yun]'s Articles
[Pi, Qing-feng]'s Articles
[Yang, Yuan-Gui]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Li-Yun]'s Articles
[Pi, Qing-feng]'s Articles
[Yang, Yuan-Gui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Li-Yun]'s Articles
[Pi, Qing-feng]'s Articles
[Yang, Yuan-Gui]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Magnetic activity and orbital periods of five low-mass eclipsing binaries.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.