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Doppler images of the eclipsing binary ER Vulpeculae
Xiang Y(项越)1,2,3; Gu SH(顾盛宏)1,2; Cameron, AC4; Barnes, JR5
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-02-11
Volume447Issue:1Pages:567-576
DOI10.1093/mnras/stu2458
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Activity Binaries: Eclipsing Stars: Imaging Stars: Individual: Er Vulpeculae Starspots
Abstract

We present Doppler images of both components of the eclipsing binary system ER Vul, based on the spectra obtained in 2004 November, 2006 September and 2008 November. The least-squares deconvolution technique is used for enhancing the signal-to-noise ratios of the observed profiles. The new surface images reveal that both stars of ER Vul show strong starspot activities and the starspots appear at various latitudes. The surface maps of 2006 and 2008 both show the presence of large high-latitude starspots on each component of ER Vul. We find no obvious phase shift of the active regions during our observations. The longitude distributions of starspots are non-uniform on both stars. At low-to-mid latitudes, the active regions are almost exclusively found in the hemisphere facing the other star. However, we find no pronounced concentration of spots at the sub-stellar points.

Funding ProjectNational Natural Science Foundation of China[10373023] ; National Natural Science Foundation of China[10773027] ; National Natural Science Foundation of China[11333006] ; Chinese Academy of Sciences[KJCX2-YW-T24]
Funding OrganizationNational Natural Science Foundation of China[10373023, 10773027, 11333006] ; Chinese Academy of Sciences[KJCX2-YW-T24]
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
Archive Date2015-04-07
WOS IDWOS:000350272700046
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCLOSE BINARIES ; SURFACE INHOMOGENEITIES ; PHYSICAL PARAMETERS ; SPOT DISTRIBUTIONS ; ACTIVE LONGITUDES ; ACTIVITY CYCLES ; MAIN-SEQUENCE ; COOL STARS ; II-PEGASI ; SYSTEMS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6811
Collection系外行星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorXiang Y(项越)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.School of Physics and Astronomy, University of St Andrews, Fife KY16 9SS, UK
5.Center for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xiang Y,Gu SH,Cameron, AC,et al. Doppler images of the eclipsing binary ER Vulpeculae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,447(1):567-576.
APA Xiang Y,Gu SH,Cameron, AC,&Barnes, JR.(2015).Doppler images of the eclipsing binary ER Vulpeculae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,447(1),567-576.
MLA Xiang Y,et al."Doppler images of the eclipsing binary ER Vulpeculae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 447.1(2015):567-576.
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