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The first multi-color photometric study of the short-period contact eclipsing binary GK Aqr
Zhang, LY1,2; Pi, QF1,2; Han, XML3; Li, TA1,2; Zhang XL(张西亮)4; Sang, HY5; Wang, DM1,2; Wang, S1,2; Zhang, LY (reprint author), Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2015-07
卷号38页码:50-54
DOI10.1016/j.newast.2015.02.002
产权排序第4完成单位
收录类别SCI
关键词Stars: Binaries: Eclipsing Stars: Period Variation Stars: Individual Gk Aqr
摘要We made the first VRI CCD light curves of the short-period contact eclipsing binary GM Aqr, which was observed on October 5 and 8, 2013 at Xinglong station of National Astronomical Observatories, China. The ephemeris of GK Aqr was calculated based on our two newly obtained minima and the minima that other observers obtained previously. We discovered that the orbital period of GK Aqr exhibits an increasing trend of P = 2.8(0.1) x 10(-7) days/year by means of fitting the O-C values of the minima. This phenomenon might be explained by mass transfer from the primary (less massive) component to the secondary (more massive) one. With the updated Wilson & Devinney program, we obtained the photometric orbital parameters for the first time. Using our parameters, we also successfully explained the light curve obtained from the All Sky Automated Survey data. In the end, we concluded that GK Aqr is a near contact binary with a low contact factor of 5.2%. As the mass transfer continues, GK Aqr could become a contact system and evolve into an over-contact system. (C) 2015 Elsevier B.V. All rights reserved.
项目资助者National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) [10978010, U1431114] ; NSFC [11263001, 11203070] ; Natural Science Foundation of the GuiZhou Province office of Education [2014298]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000351979500006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]VARIABLE-STARS ; LIGHT CURVES ; CATALOG
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被引频次:1[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/114a53/5463
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Zhang, LY (reprint author), Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China.
作者单位1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.Dept. of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA
4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, PR China
5.School of Mathematics Science, Liaocheng University, Liaocheng 252059, PR China
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Zhang, LY,Pi, QF,Han, XML,et al. The first multi-color photometric study of the short-period contact eclipsing binary GK Aqr[J]. NEW ASTRONOMY,2015,38:50-54.
APA Zhang, LY.,Pi, QF.,Han, XML.,Li, TA.,Zhang XL.,...&Zhang, LY .(2015).The first multi-color photometric study of the short-period contact eclipsing binary GK Aqr.NEW ASTRONOMY,38,50-54.
MLA Zhang, LY,et al."The first multi-color photometric study of the short-period contact eclipsing binary GK Aqr".NEW ASTRONOMY 38(2015):50-54.
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