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The Active Contact Binary FU Draconis: Four Color Light Curves and Period Changes
Liu L(刘亮)1,2,3,4; Qian SB(钱声帮)1,2,3,4; He JJ(何家佳)1,2,3,4; Liao WP(廖文萍)1,2,3,4; Zhu LY(朱俐颖)1,2,3,4; Zhao EG(赵二刚)1,2,3,4; Liu, L (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-06-25
Volume64Issue:3Pages:48-53
DOI10.1093/pasj/64.3.48
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Evolution Stars: Individual (Fu Draconis)
AbstractSecured four color light curves of FU Dra were analyzed with the 2003 version of the Wilson and Devinney (WD) code. It was shown that FU Dra is still a W-type contact binary system, but might have a high fill-out factor (f = 26.7% +/- 1.0%). A dark spot was introduced on the massive cool component. A period investigation based on all available data shows that the period of the system may include a long-term increase (dP/dt = 8.8 +/- 2.9 x 10(-8) d yr(-1)) and an oscillation (semi-amplitude of 0.0024 d, P-3 = 7.8 yr). The long-term period decrease may be caused by mass transfer, though the periodic oscillation may be rooted in cyclic magnetic activity.
Funding OrganizationChinese Natural Science Foundation [11103074 10973037, 10903026] ; West Light Foundation of the Chinese Academy of Sciences
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6264
URL查看原文
Archive Date2012-11-06
WOS IDWOS:000305868200006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTHERMAL RELAXATION OSCILLATION ; URSAE MAJORIS SYSTEMS ; STARS ; COMPONENTS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5867
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 AuthorLiu, L (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P. O. Box 110, Kunming 650011, P. R. China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), Beijing 100012, P. R. China
3.Graduate School of the CAS, Yuquan Road 19#, Shijingshan Block, Beijing 100049, P. R. China
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu L,Qian SB,He JJ,et al. The Active Contact Binary FU Draconis: Four Color Light Curves and Period Changes[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2012,64(3):48-53.
APA Liu L.,Qian SB.,He JJ.,Liao WP.,Zhu LY.,...&Liu, L .(2012).The Active Contact Binary FU Draconis: Four Color Light Curves and Period Changes.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,64(3),48-53.
MLA Liu L,et al."The Active Contact Binary FU Draconis: Four Color Light Curves and Period Changes".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64.3(2012):48-53.
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