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The first Doppler images of the eclipsing binary SZ Piscium
Xiang Y(项越)1,2,3; Gu SH(顾盛宏)1,2; Cameron, A. Collier4; Barnes, J. R.5; Zhang, Liyun6
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2016-02-11
Volume456Issue:1Pages:314-322
DOI10.1093/mnras/stv2642
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars Activity-binaries Eclipsing-stars Imaging-stars Individual Sz Psc-starspots
Abstract

We present the first Doppler images of the active eclipsing binary system SZ Psc, based on the high-resolution spectral data sets obtained in 2004 November and 2006 September-December. The least-squares deconvolution technique was applied to derive high signal-to-noise profiles from the observed spectra of SZ Psc. Absorption features contributed by a third component of the system were detected in the LSD profiles at all observed phases. We estimated the mass and period of the third component to be about 0.9M circle dot and 1283 +/- 10 d, respectively. After removing the contribution of the third body from the least-squares deconvolved profiles, we derived the surface maps of SZ Psc. The resulting Doppler images indicate significant starspot activities on the surface of the K subgiant component. The distributions of star-spots are more complex than that revealed by previous photometric studies. The cooler K component exhibited pronounced high-latitude spots as well as numerous low- and intermediate-latitude spot groups during the entire observing seasons, but did not show any large, stable polar cap, different from many other active RS CVn-type binaries.

Funding ProjectNational Natural Science Foundation of China [10373023] ; National Natural Science Foundation of China [10773027] ; National Natural Science Foundation of China [11333006] ; National Natural Science Foundation of China [U1431114] ; Chinese Academy of Sciences [KJCX2-YW-T24]
Funding OrganizationNational Natural Science Foundation of China [10373023,10773027,11333006,U1431114] ; Chinese Academy of Sciences [KJCX2-YW-T24]
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 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 Date2016-12-30
WOS IDWOS:000368010000058
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordII-PEGASI ; ACTIVE STARS ; CHROMOSPHERIC ACTIVITY ; ORBITAL PERIOD ; V711 TAURI ; HR 1099 ; EVOLUTION ; EMISSION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9406
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.Department of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
6.Department of Physics, College of Science, Guizhou University and NAOC-GZU-Sponsored Center for Astronomy, Guizhou University, Guiyang 550025, China
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, A. Collier,et al. The first Doppler images of the eclipsing binary SZ Piscium[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(1):314-322.
APA Xiang Y,Gu SH,Cameron, A. Collier,Barnes, J. R.,&Zhang, Liyun.(2016).The first Doppler images of the eclipsing binary SZ Piscium.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(1),314-322.
MLA Xiang Y,et al."The first Doppler images of the eclipsing binary SZ Piscium".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.1(2016):314-322.
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