YNAO OpenIR  > 系外行星研究组
Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40
Xiang Y(项越)1,2; Gu SH(顾盛宏)1,2,3; Donati, J.-F.4; Hussain, G. A.5; Cameron, A. Collier6
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2023-02-15
卷号520期号:3页码:3964-3973
DOI10.1093/mnras/stad363
产权排序第1完成单位
收录类别SCI ; EI
关键词techniques: polarimetric stars: imaging stars: magnetic fields stars: individual: TAP 4 stars: individual: TAP 40
摘要We present a Zeeman-Doppler imaging study of two weak-line T Tauri stars TAP 4 and TAP 40, based on the high-resolution spectropolarimetric observations with ESPaDOnS at the Canada-France-Hawaii Telescope in November 2013, in the framework of the Magnetic Topologies of Young Stars and Survival of close-in giant Exoplanets large programme. We apply two Zeeman-Doppler imaging codes to the Stokes I and V profiles to reconstruct their brightness and large-scale magnetic field images. The results given by the two imaging codes are in good agreement with each other. TAP 4 shows a large polar cool spot and several intermediate-latitude warm spots on its surface, whereas TAP 40 exhibits very weak variations in its Stokes I profiles, suggesting a mostly unspotted photosphere. We detect Zeeman signatures in the Stokes V profiles of both stars. The reconstructed magnetic maps reveal dominantly toroidal fields, which enclose about 60 percent of the total magnetic energy for both TAP 4 and TAP 40. Both stars show prominent circular ring features of the azimuthal magnetic field. We derive a solar-like surface differential rotation on TAP 4 from the tomographic modelling. The brightness image of TAP 4 is used to predict the radial velocity (RV) jitters induced by its activity. After filtering out the activity jitter, the rms of its RVs is reduced from 1.7 to 0.2 km s(-1), but we do not detect any periodic signals in the filtered RVs of TAP 4, implying that it is unlikely to host a close-in exoplanet more massive than similar to 3.5M(Jup) at 0.1 au.
资助项目National Natural Science Foundation of China[10373023] ; National Natural Science Foundation of China[10773027] ; National Natural Science Foundation of China[11603068] ; National Natural Science Foundation of China[11903074] ; National Natural Science Foundation of China[U1531121]
项目资助者National Natural Science Foundation of China[10373023, 10773027, U1531121, 11603068, 11903074] ; China Manned Space Project[CMS-CSST-2021-B07] ; European Research Council (ERC) under the H2020 research & innovation programme[740651]
语种英语
学科领域天文学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:001043810000013
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIFFERENTIAL ROTATION ; ACTIVE STARS ; YOUNG SUNS ; PHOTOMETRIC VARIABILITY ; HOT JUPITER ; AB-DORADUS ; FIELDS ; EVOLUTION ; PATTERNS ; BINARY
EI入藏号20232014101119
EI主题词Stars
EI分类号657.2 Extraterrestrial Physics and Stellar Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 723.2 Data Processing and Image Processing - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/26027
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
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650216, China;
3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 101408, China;
4.IRAP, Université de Toulouse, CNRS, UPS, CNES, Toulouse, F-31400, France;
5.Science Division, European Space Research and Technology Centre (ESA/ESTEC), Keplerlaan 1, Noordwijk, NL-2201 AZ, Netherlands;
6.School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, United Kingdom
第一作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Xiang Y,Gu SH,Donati, J.-F.,et al. Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,520(3):3964-3973.
APA Xiang Y,Gu SH,Donati, J.-F.,Hussain, G. A.,&Cameron, A. Collier.(2023).Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,520(3),3964-3973.
MLA Xiang Y,et al."Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 520.3(2023):3964-3973.
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
Magnetic topologies (1747KB)期刊论文出版稿开放获取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
[Donati, J.-F.]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
[Donati, J.-F.]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
[Donati, J.-F.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40.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。