YNAO OpenIR  > 系外行星研究组
Distribution and evolution of starspots on the RS CVn binary II Pegasi in 2004
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
2014-03
卷号438期号:3页码:2307-2316
DOI10.1093/mnras/stt2345
产权排序第1完成单位
收录类别SCI
关键词Stars: Activity Binaries: Close Stars: Imaging Stars: Individual: Ii Peg Starspots
摘要We present Doppler images of RS CVn-type binary II Peg based on two data sets obtained in 2004 February and November. In order to improve signal-to-noise ratio and reliability, we apply least-squares deconvolution technique to calculate average profiles from 2032 photospheric absorption lines. Both of the resulting surface images show a wide latitude distribution of starspots. Most spots are concentrated at a high-latitude belt above 60 degrees and a low-latitude belt near equator. The starspots evolved dramatically between two observing runs, which may indicate shorter time-scale evolution in this epoch, especially for low-latitude belt. There is no stable preferred active longitude that can be found in our images. We also find out a possible phenomenon that the intermediate-latitude spot migrated poleward and merged with the high-latitude spot to make it stronger, which may reveal a more complex behaviour of starspots on II Peg. A potential change of orbital ephemeris zero-point was detected. This may imply an orbital period change of II Peg like other active close binaries.
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
URL查看原文
归档日期2014-03-12
WOS记录号WOS:000331877000024
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD MODULATION ; STELLAR SURFACE-STRUCTURE ; CANUM-VENATICORUM ; ACTIVE STARS ; DIFFERENTIAL ROTATION ; DOPPLER IMAGES ; SPOT ACTIVITY ; V711 TAURI ; HR 1099 ; ACTIVITY CYCLE
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6801
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.Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
推荐引用方式
GB/T 7714
Xiang Y,Gu SH,Cameron, AC,et al. Distribution and evolution of starspots on the RS CVn binary II Pegasi in 2004[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,438(3):2307-2316.
APA Xiang Y,Gu SH,Cameron, AC,Barnes, JR,&Xiang, Y .(2014).Distribution and evolution of starspots on the RS CVn binary II Pegasi in 2004.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,438(3),2307-2316.
MLA Xiang Y,et al."Distribution and evolution of starspots on the RS CVn binary II Pegasi in 2004".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 438.3(2014):2307-2316.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Distribution and evo(1247KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xiang Y(项越)]的文章
[Gu SH(顾盛宏)]的文章
[Cameron, AC]的文章
百度学术
百度学术中相似的文章
[Xiang Y(项越)]的文章
[Gu SH(顾盛宏)]的文章
[Cameron, AC]的文章
必应学术
必应学术中相似的文章
[Xiang Y(项越)]的文章
[Gu SH(顾盛宏)]的文章
[Cameron, AC]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Distribution and evolution of starspots on the RS CVn binary II Pegasi in 2004.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。