中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 系外行星研究组
Further Study of Starspot Activity and Measurement of Differential Rotation for SZ Piscium

文献类型：期刊论文

作者Xiang Y(项越)1,5,6; Gu SH(顾盛宏)1,4,5,6; Cameron, A. Collier3; Barnes, J. R.2; Cao DT(曹东涛)1,5,6
刊名ASTROPHYSICAL JOURNAL
出版日期2024-12-01
卷号976期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ad86bd
产权排序第1完成单位
文献子类Article
英文摘要We present a series of nine Doppler images of the magnetically active K component of the RS CVn-type binary SZ Piscium (SZ Psc), based on high-resolution spectroscopic data collected from 2014 to 2018. We apply least-squares deconvolution (LSD) to all spectra to extract the average profiles with high signal-to-noise ratios for Doppler imaging. The surface maps of the K subgiant show starspots widely distributed along its latitude and longitude. A prominent, nonaxisymmetric polar spot around phase 0 is revealed by all images with sufficient phase coverage, which may be a stable feature on the K component. The starspots evolve over a timescale of 1 month. We have determined the surface shear rate of the K component from starspot maps reconstructed 10 days apart in 2017 November-December through the cross-correlation method. The surface differential rotation parameters are Omega eq = 1.591 +/- 0.002 rad day-1 and Delta Omega = 0.035 +/- 0.003 rad day-1. The absorption lines contributed from the tertiary component of SZ Psc are detected in all LSD profiles, and we measure the radial velocity of the binary system and the tertiary component to derive an elliptical orbit with a period of 1530 +/- 3 days and a mass of 0.75 +/- 0.06 M circle dot for the tertiary component.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词SOLAR-TYPE STARS ; CHROMOSPHERIC ACTIVITY ; PROMINENCE ACTIVITY ; EVOLUTION ; SYSTEM ; SPOTS ; ANDROMEDAE ; LIFETIMES ; KEPLER
资助项目MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[10373023]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[10773027]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[U1531121]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[11603068]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[11903074]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12373039]; National Natural Science Foundation of China; China Manned Space Project[202201AT070186]; China Manned Space Project[202305AS350009]; Yunnan Fundamental Research Projects; Yunnan Revitalization Talent Support Program (Young Talent Project)[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences; Chinese Academy of Sciences; People's Government of Yunnan Province; Institute of Astronomy RAS in Moscow; University of Vienna
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001362659800001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[10373023, 10773027, U1531121, 11603068, 11903074, 12373039] ; National Natural Science Foundation of China ; China Manned Space Project[202201AT070186, 202305AS350009] ; Yunnan Fundamental Research Projects ; Yunnan Revitalization Talent Support Program (Young Talent Project)[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Institute of Astronomy RAS in Moscow ; University of Vienna
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27830]  
专题云南天文台_系外行星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China;
2.Department of Physical Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
3.School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK;
4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China;
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; xy@ynao.ac.cn, shenghonggu@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Xiang Y,Gu SH,Cameron, A. Collier,et al. Further Study of Starspot Activity and Measurement of Differential Rotation for SZ Piscium[J]. ASTROPHYSICAL JOURNAL,2024,976(2).
APA 项越,顾盛宏,Cameron, A. Collier,Barnes, J. R.,&曹东涛.(2024).Further Study of Starspot Activity and Measurement of Differential Rotation for SZ Piscium.ASTROPHYSICAL JOURNAL,976(2).
MLA 项越,et al."Further Study of Starspot Activity and Measurement of Differential Rotation for SZ Piscium".ASTROPHYSICAL JOURNAL 976.2(2024).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

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。