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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; Xiang, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-02-11
卷号447期号:1页码:567-576
DOI10.1093/mnras/stu2458
产权排序第1完成单位
收录类别SCI
关键词Stars: Activity Binaries: Eclipsing Stars: Imaging Stars: Individual: Er Vulpeculae Starspots
摘要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.
项目资助者National Natural Science Foundation of China [10373023, 10773027, 11333006] ; Chinese Academy of Sciences [KJCX2-YW-T24]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
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归档日期2015-04-07
WOS记录号WOS:000350272700046
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CLOSE BINARIES ; SURFACE INHOMOGENEITIES ; PHYSICAL PARAMETERS ; SPOT DISTRIBUTIONS ; ACTIVE LONGITUDES ; ACTIVITY CYCLES ; MAIN-SEQUENCE ; COOL STARS ; II-PEGASI ; SYSTEMS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6811
专题系外行星研究组
中国科学院天体结构与演化重点实验室
通讯作者Xiang, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.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
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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,&Xiang, Y .(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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