Photometric investigations on two totally eclipsing contact binaries: V342 UMa and V509 Cam
Li, Kai1,2; Xia, Qi-Qi1; Liu, Jin-Zhong3; Zhang, Yu3; Gao, Xing3; Hu, Shao-Ming1; Guo, Di-Fu1; Chen, Xu1; Liu, Yuan4
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2019-10-01
卷号19期号:10页码:12
DOI10.1088/1674-4527/19/10/147
收录类别SCI
关键词stars: binaries: close stars: binaries: eclipsing stars: individual (V342UMa, V509Cam)
摘要

By analyzing two sets of complete BV RcIc light curves for V342 UMa and three sets of complete BV RcIc light curves for V509Cam, we determined that the two systems are bothW-subtype contact binaries and that V342 UMamanifests a shallow contact configuration, while V509 Cam exhibits amedium contact configuration. Given that both of them are totally eclipsing binaries, the physical parameters derived only by the photometric light curves are reliable. Meanwhile, the period changes of the two targets were analyzed based on all available eclipsing times. We discovered that V342 UMa shows long-term period decrease with a rate of -1.02(+/- 0.54) x 10-7 d yr-1 and that V509 Cam displays long-term period increase with a rate of 3.96(+/- 0.90) x 10-8 d yr-1. Both the conservative mass transfer and angular momentum loss via magnetic stellar winds can be used to interpret the long-term period decrease of V342 UMa. The longterm period increase of V509 Cam can be explained by mass transfer from the less massive star to the more massive one. The absolute parameters of the two binaries were estimated according to their Gaia distances and our derived photometric solution results. This method can be extended to other contact binaries without radial velocities but with reliable photometric solutions. Their evolutionary states were investigated and we found that they reveal properties that are identical to otherW- subtype contact systems.

资助项目National Natural Science Foundation of China[11703016] ; National Natural Science Foundation of China[U1431105] ; Chinese Academy of Sciences[U1431105] ; program of the Light in China's Western Region[2015-XBQNA-02] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Natural Science Foundation of Shandong Province[JQ201702] ; Young Scholars Program of Shandong University, Weihai[20820162003] ; Young Scholars Program of Shandong University, Weihai[20820171006] ; program of Tianshan Youth[2017Q091] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201704] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
项目资助者National Natural Science Foundation of China[11703016, U1431105] ; Chinese Academy of Sciences[U1431105] ; program of the Light in China's Western Region[2015-XBQNA-02] ; Natural Science Foundation of Shandong Province[ZR2014AQ019, JQ201702] ; Young Scholars Program of Shandong University, Weihai[20820162003, 20820171006] ; program of Tianshan Youth[2017Q091] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201704] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
学科门类理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS记录号WOS:000505165600010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STAR LIGHT ; PERIOD ; EVOLUTION ; SYSTEM ; CATALOG
引用统计
被引频次:15[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/114a53/22103
专题中国科学院天体结构与演化重点实验室
通讯作者Li, Kai
作者单位1.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
4.Qilu Inst Technol, Jinan 250200, Shandong, Peoples R China
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Li, Kai,Xia, Qi-Qi,Liu, Jin-Zhong,et al. Photometric investigations on two totally eclipsing contact binaries: V342 UMa and V509 Cam[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(10):12.
APA Li, Kai.,Xia, Qi-Qi.,Liu, Jin-Zhong.,Zhang, Yu.,Gao, Xing.,...&Liu, Yuan.(2019).Photometric investigations on two totally eclipsing contact binaries: V342 UMa and V509 Cam.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(10),12.
MLA Li, Kai,et al."Photometric investigations on two totally eclipsing contact binaries: V342 UMa and V509 Cam".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.10(2019):12.
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