Period behavior of the W Ursae majoris contact binary AH Tauri

doi:10.1051/0004-6361:20020753

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	Period behavior of the W Ursae majoris contact binary AH Tauri
	Yang YL(杨毓兰)1,2,3 ; Liu QY(刘清耀)1,2,3 ; Yang, YL (reprint author), Chinese Acad Sci, Natl Astron Observ, Kunming, Yunnan Province, Peoples R China.
发表期刊	ASTRONOMY & ASTROPHYSICS
	2002-08
卷号	390 期号:2 页码:555-559
DOI	10.1051/0004-6361:20020753
产权排序	第2完成单位
收录类别	SCI
关键词	Star : Individual : Ah Tau Stars : Binary : Eclipsing
摘要	New timing of minimum light determined from CCD observations of the W UMa type contact binary AH Tau is presented. From the present time of minimum light and those collected from the literature, the changes in the orbital period of the system are analyzed. The result reveals that the orbital period of AH Tau continuously decreased at a rate of Deltap/p = -1.4 x 10(-11) from 1944 to 1976 and suddenly and sharply decreased by about 0.33 s around 1976. After 1976 the orbital period of the system continually increased at a change rate of Deltap/p p = 1.5 x 10(-10). A possible explanation of the changes in the orbital period of AH Tau is discussed. They may be the result of compound action of three mechanisms: the cyclical magnetic activity, the mass loss and the radius swelling of the two components of the system.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
归档日期	2002-09-09
WOS记录号	WOS:000177116700014
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
引用统计	被引频次：7[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/114a53/4135
专题	其他
通讯作者	Yang, YL (reprint author), Chinese Acad Sci, Natl Astron Observ, Kunming, Yunnan Province, Peoples R China.
作者单位	1.National Astronomical Observatories, Chinese Academy of Sciences, China 2.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province, China 3.United Laboratory of Optical Astronomy, Chinese Academy of Sciences, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yang YL,Liu QY,Yang, YL . Period behavior of the W Ursae majoris contact binary AH Tauri[J]. ASTRONOMY & ASTROPHYSICS,2002,390(2):555-559.
APA	Yang YL,Liu QY,&Yang, YL .(2002).Period behavior of the W Ursae majoris contact binary AH Tauri.ASTRONOMY & ASTROPHYSICS,390(2),555-559.
MLA	Yang YL,et al."Period behavior of the W Ursae majoris contact binary AH Tauri".ASTRONOMY & ASTROPHYSICS 390.2(2002):555-559.

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