Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac

doi:10.1007/s12036-016-9392-y

	Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac
	Li, K.1,2 ; Hu, S. -M.1; Guo, D. -F.1; Jiang, Y. -G.2; Gao, D. -Y.1; Chen, X.1
发表期刊	JOURNAL OF ASTROPHYSICS AND ASTRONOMY
	2016-09-01
卷号	37 期号:3
DOI	10.1007/s12036-016-9392-y
收录类别	SCI
关键词	Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual: V441 Lac
摘要	Four color light curves of the EW type eclipsing binary V441 Lac were presented and analyzed by the W-D code. It is found that V441 Lac is an extremely low mass ratio (q = 0.093 +/- 0.001) semi-detached binary with the less massive secondary component filling the inner Roche lobe. Two dark spots on the primary component were introduced to explain the asymmetric light curves. By analyzing all times of light minimum, we determined that the orbital period of V441 Lac is continuously increasing at a rate of dP/dt = 5.874(+/- 0.007) x 10(-7) d yr(-1). The semi-detached Algol type configuration of V441 Lac is possibly formed by a contact configuration destroyed shallow contact binary due to mass transfer from the less massive component to the more massive one predicted by the thermal relaxation oscillation theory.
资助项目	National Natural Science Foundation of China[U1431105] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Young Scholars Program of Shandong University, Weihai ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201303]
项目资助者	National Natural Science Foundation of China[U1431105] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Young Scholars Program of Shandong University, Weihai ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201303]
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星天文学
文章类型	Article
出版者	INDIAN ACAD SCIENCES
出版地	C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
ISSN	0250-6335
URL	查看原文
WOS记录号	WOS:000384550400001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	URSAE MAJORIS SYSTEMS ; LIGHT CURVES ; CONTACT ; STARS ; DEEP ; EVOLUTION ; COMPONENT ; CATALOG ; CANCRI ; CYGNI
引用统计	被引频次：3[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/114a53/9725
专题	中国科学院天体结构与演化重点实验室
通讯作者	Li, K.
作者单位	1.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space SciencesShandong UniversityWeihaiChina 2.Key Laboratory for the Structure and Evolution of Celestial ObjectsChinese Academy of SciencesKunmingChina
推荐引用方式 GB/T 7714	Li, K.,Hu, S. -M.,Guo, D. -F.,et al. Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2016,37(3).
APA	Li, K.,Hu, S. -M.,Guo, D. -F.,Jiang, Y. -G.,Gao, D. -Y.,&Chen, X..(2016).Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,37(3).
MLA	Li, K.,et al."Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 37.3(2016).

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