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The First Photometric Study of the Short-period Shallow Contact System LO Comae
Zhang, Y.1; Han QW(韩全旺)2,3,4; Liu, J. Z.1
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
2016-12-01
Volume128Issue:970
DOI10.1088/1538-3873/128/970/124201
Contribution Rank第2完成单位
Indexed BySCI
Keyword(Stars:) Binaries (Including Multiple): Close (Stars:) Binaries: Eclipsing Stars: Evolution Stars: Individual (Lo Comae)
Abstract

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.

Funding Projectprogram of the Light in China' Western Region (LCWR)[2015-XBQN-A-02] ; National Natural Science Foundation of China[11303080] ; Youth Innovation Promotion Association CAS[2014050]
Funding Organizationprogram of the Light in China' Western Region (LCWR)[2015-XBQN-A-02] ; National Natural Science Foundation of China[11303080] ; Youth Innovation Promotion Association CAS[2014050]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6280
URL查看原文
WOS IDWOS:000390336400003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordURSAE MAJORIS SYSTEMS ; BINARY STAR LIGHT ; BLUE STRAGGLERS ; VELOCITY CURVES ; EVOLUTION ; DISTANCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9855
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Y.
Affiliation1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China
2.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Zhang, Y.,Han QW,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 QW,&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).
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