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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.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-06-25
卷号64期号:3页码:48-53
DOI10.1093/pasj/64.3.48
产权排序第1完成单位
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Evolution Stars: Individual (Fu Draconis)
摘要Secured 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.
项目资助者Chinese Natural Science Foundation [11103074 10973037, 10903026] ; West Light Foundation of the Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2012-11-06
WOS记录号WOS:000305868200006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]THERMAL RELAXATION OSCILLATION ; URSAE MAJORIS SYSTEMS ; STARS ; COMPONENTS
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5867
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Liu, L (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.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
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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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