Two W-subtype contact binaries: GQ Boo and V1367 Tau

	Two W-subtype contact binaries: GQ Boo and V1367 Tau
	Zhang, Jia 1,2; Qian, Sheng-Bang 1,2; Han, Zhong-Tao 1,2; Wu, Yue3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-04-01
卷号	466 期号:1 页码:1118-1126
关键词	techniques: photometric binaries: eclipsing stars: evolution
英文摘要	Two contact binaries, GQ Boo and V1367 Tau, were observed and analysed with a new method to obtain the absolute parameters. The light-curve analysis shows that both of them are obvious W-subtype contact binaries, with much more massive but apparently cooler components (M-2/M-1 similar or equal to 2 and 4, T-2/T-1 similar or equal to 0.95 and 0.94). The orbital periods were studied using the O-C diagrams, and it is thought that the minima timings were heavily affected by the long-standing magnetic activities on the star surface, so the minima timings cannot represent the real period changes. The mass-radius relationships were proposed by the light-curve analysis alone, which is equivalent to the mean density. The density and temperature can determine the other absolute parameters in most of the time. With the almost complete star parameter space provided by PARSEC, approximate masses and radii were obtained (0.52 +/- 0.08M(circle dot) and 1.01 +/- 0.15M(circle dot) for GQ Boo, and 0.22 +/- 0.01M(circle dot) and 0.92 +/- 0.06M(circle dot) for V1367 Tau). The mass-radius relationship is a neglected useful tool to calculate the mass and radius, especially for the detached binaries.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	URSAE MAJORIS SYSTEMS ; STAR LIGHT CURVES ; ECLIPSING BINARIES ; RZ-COMAE ; VELOCITY CURVES ; AH-CANCRI ; AM LEONIS ; PARAMETERS ; PERIOD ; CALIBRATIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000398112400077
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8228]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China 2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China 3.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jia,Qian, Sheng-Bang,Han, Zhong-Tao,et al. Two W-subtype contact binaries: GQ Boo and V1367 Tau[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(1):1118-1126.
APA	Zhang, Jia,Qian, Sheng-Bang,Han, Zhong-Tao,&Wu, Yue.(2017).Two W-subtype contact binaries: GQ Boo and V1367 Tau.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(1),1118-1126.
MLA	Zhang, Jia,et al."Two W-subtype contact binaries: GQ Boo and V1367 Tau".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.1(2017):1118-1126.