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New Photometric Investigation of the G-Type Contact Binary GSC 0763-0572
Wang JJ(王晶晶)1,2,3; Qian SB(钱声帮)1,2,3; Zhao EG(赵二刚)1,2,3; Zhu LY(朱俐颖)1,2,3; Liao WP(廖文萍)1,2,3; Li K(李凯)1,2,3; Zhang J(张嘉)1,2,3; Liu L(刘亮)1,2,3; Li LJ(李临甲)1,2,3; Wang, JJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-08-25
Volume64Issue:4Pages:83-
DOI10.1093/pasj/64.4.83
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (Gsc 0763-0572)
AbstractWe present new CCD photometric light curves of the W UMa-type binary system GSC 0763-0572 in the V, R, and I bands. Here, the light curves in the R and I bands are the first to be obtained. The primary component of this system belongs to a G-type solar-like star; our new observation indicates that the activities of GSC 0763-0572 may be stable. Based on all available times of the light minimum, we found that the orbital period is variable. The O - C curve suggested that the period of GSC 0763-0572 is undergoing a continuous increase at a rate of dP/dt = +5.81(33) x 10(-7) d yr(-1). Photometric solutions were derived by using the Wilson-Devinney code. We confirmed that this system is A-subtype overcontact binary with a degree of contact factor of f = 31.0% (+/- 1.5%), a mass ratio of q = 0.2330, and a temperature difference of Delta T = 31 K. The long-term increase of the orbital period can be explained by mass transfer from the less-massive component to the more-massive one. It's inferred that GSC 0763-0572 may presently be in an expanding state of thermal relaxation oscillation, and may finally evolve into a rapid-rotating single star.
Funding OrganizationChinese Natural Science Foundation [11133007, 10973037, 10903026, 11103074] ; west light Foundation of the Chinese Academy of Science
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6264
URL查看原文
Archive Date2012-12-19
WOS IDWOS:000309296600020
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordOVERCONTACT BINARY ; URSAE-MAJORIS ; LIGHT CURVES ; EVOLUTIONARY STATUS ; PERIOD CHANGES ; SYSTEMS ; TAURI ; HYDRAE ; LEONIS ; STARS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5863
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorWang, JJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Astronomical Observatory, CAS, P.O. Box 110, 650011 Kunming, P.R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, 650011 Kunming, P.R. China
3.Graduate School of the CAS, Yuquan Road 19, Shijingshan Block, 100049 Beijing, P.R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang JJ,Qian SB,Zhao EG,et al. New Photometric Investigation of the G-Type Contact Binary GSC 0763-0572[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2012,64(4):83-.
APA Wang JJ.,Qian SB.,Zhao EG.,Zhu LY.,Liao WP.,...&Wang, JJ .(2012).New Photometric Investigation of the G-Type Contact Binary GSC 0763-0572.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,64(4),83-.
MLA Wang JJ,et al."New Photometric Investigation of the G-Type Contact Binary GSC 0763-0572".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64.4(2012):83-.
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