OO Aquilae: a solar-type contact binary with intrinsic light curve changes

	OO Aquilae: a solar-type contact binary with intrinsic light curve changes
	Li, Hua-Li 1,2; Wei, Jian-Yan1 ; Yang, Yuan-Gui 3; Dai, Hai-Feng 3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2016
卷号	16 期号:1
关键词	binaries: close binaries: eclipsing stars: individual (OO Aql)
英文摘要	New multi-color photometry of the solar-type contact binary OO Aql was obtained in 2012 and 2013, using the 60 cm telescope at Xinglong Station of the National Astronomical Observatories, Chinese Academy of Sciences. From two sets of light curves LC1 and LC2, photometric models were performed by using the 2003 version of the Wilson-Devinney code. The overcontact factor of the binary system was determined to be integral = 37.0 (+/- 0. 5) %. The intrinsic variability of this binary occurs in light maxima and minima, which could result from a possible third component and magnetic activity of the late type components. Based on all available light minimum times, the orbital period may change in a complicated mode, i.e., sudden period jumps or continuous period variations. The period of OO Aql may possibly undergo a secular period decrease with a rate of dP / dt = -3.63 (+/- 0.30) x 10(-8) d yr(-1), superimposed by two possible cyclic variations in the O - C curve. The long-term period decrease may be interpreted as conserved mass transfer from the more massive component to the less massive one. The 21.5-yr oscillation may be attributed to cyclic magnetic activity, and the 69.3-yr one may result from the light-time effect of an unseen tertiary body.
收录类别	SCI
语种	英语
WOS记录号	WOS:000368088700002
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5469]
专题	国家天文台_空间科学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China
推荐引用方式 GB/T 7714	Li, Hua-Li,Wei, Jian-Yan,Yang, Yuan-Gui,et al. OO Aquilae: a solar-type contact binary with intrinsic light curve changes[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(1).
APA	Li, Hua-Li,Wei, Jian-Yan,Yang, Yuan-Gui,&Dai, Hai-Feng.(2016).OO Aquilae: a solar-type contact binary with intrinsic light curve changes.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(1).
MLA	Li, Hua-Li,et al."OO Aquilae: a solar-type contact binary with intrinsic light curve changes".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.1(2016).