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Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra
Liao WP(廖文萍)1,2; Qian SB(钱声帮)1,2,3; Zejda, Miloslav4; Zhu LY(朱俐颖)1,2,3; Li LJ(李临甲)1,2
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-06-01
Volume16Issue:6
DOI10.1088/1674-4527/16/6/094
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (Tw Draco)
Abstract

By using the Lunar-based Ultraviolet Telescope (LUT) from 2014 December 2 to December 4, the first near-UV light curve of the well-known Algol-type binary TW Dra is reported, which is analyzed with the 2013 version of the W-D code. Our solutions confirmed that TW Dra is a semi-detached binary system where the secondary component fills its Roche lobe. The mass ratio and a high inclination are obtained (q = 0.47, i = 86.68 degrees). Based on 589 available data spanning more than one century, the complex period changes are studied. Secular increase and three cyclical changes are found in the corresponding orbital period analysis. The secular increase changes reveal mass transfer from the secondary component to the primary one at a rate of 6.8 x 10(-7) M(circle dot)yr(-1). One large cyclical change of 116.04 yr may be caused by disturbance of visual component ADS 9706B orbiting TW Dra (ADS 9706A), while the other two cyclical changes with shorter periods of 22.47 and 37.27 yr can be explained as the result of two circumbinary companions that are orbiting around TW Dra, where the two companions are in simple 3 : 5 orbit-rotation resonances. TW Dra itself is a basic binary in a possible sextuple system with the configuration (1 + 1) + (1 + 1) + (1 + 1), which further suggests that multiplicity may be a fairly common phenomenon in close binary systems.

Funding ProjectKey Research Program of Chinese Academy of Sience[KGED-EW-603] ; National Natural Science Foundation of China[11403095] ; National Natural Science Foundation of China[11133007] ; National Natural Science Foundation of China[11325315] ; Yunnan Natural Science Foundation[2014FB187] ; Science Foundation of Yunnan Province[2012HC011] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09010202]
Funding OrganizationKey Research Program of Chinese Academy of Sience[KGED-EW-603] ; National Natural Science Foundation of China[11403095, 11133007, 11325315] ; Yunnan Natural Science Foundation[2014FB187] ; Science Foundation of Yunnan Province[2012HC011] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09010202]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
Archive Date2016-08-15
WOS IDWOS:000377524600009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR LIGHT CURVES ; ECLIPSING BINARIES ; TW-DRACONIS ; VELOCITY CURVES ; ORBITAL-PERIOD ; COMPONENTS ; DRA
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9606
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLiao WP(廖文萍)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, CZ-611 37 Brno, Czech Republic
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liao WP,Qian SB,Zejda, Miloslav,et al. Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(6).
APA Liao WP,Qian SB,Zejda, Miloslav,Zhu LY,&Li LJ.(2016).Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(6).
MLA Liao WP,et al."Lunar-based Ultraviolet Telescope study of the well-known Algol-type binary TWDra".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.6(2016).
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