The First Photometric Study of the Short-period Shallow Contact System LO Comae

	The First Photometric Study of the Short-period Shallow Contact System LO Comae
	Zhang, Y.1 ; Han, Q. W.2,3,4; Liu, J. Z.1
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
	2016-12-01
卷号	128 期号:970
关键词	(stars:) binaries (including multiple): close (stars:) binaries: eclipsing stars: evolution stars: individual (LO Comae)
ISSN号	0004-6280
英文摘要	In this paper, the first complete photometric light curves in the B, V, and R passbands for an eclipsing binary LO Com are presented, and the photometric solution for the LO Com is derived by analyzing these light curves by using the Wilson and Devinney code. From the photometric solution, it is found that the LO Com is a W-type W UMa binary with a mass ratio ofq=m(2)/m(1)=2.478 and a contact degree of f=(3.2 +/- 0.25)%. By combining the two new minimum times with those published earlier in the literature, we have found that the (O - C) curve shows a downward parabolic variation corresponding to a long-term decrease in the orbital period with a rate of dP dt=-1.18 x 10(-7) days yr(-1). This long-term decrease in its orbital period may be caused by mass transfer from the more massive component to the less massive one.
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 ; BINARY STAR LIGHT ; BLUE STRAGGLERS ; VELOCITY CURVES ; EVOLUTION ; DISTANCE
收录类别	SCI
语种	英语
WOS记录号	WOS:000390336400003
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1419]
专题	新疆天文台_光学天文与技术应用研究室
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China 3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Y.,Han, Q. W.,Liu, J. Z.. The First Photometric Study of the Short-period Shallow Contact System LO Comae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2016,128(970).
APA	Zhang, Y.,Han, Q. W.,&Liu, J. Z..(2016).The First Photometric Study of the Short-period Shallow Contact System LO Comae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,128(970).
MLA	Zhang, Y.,et al."The First Photometric Study of the Short-period Shallow Contact System LO Comae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 128.970(2016).