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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
2019-10-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume19Issue:10Pages:147
Contribution Rank3
AbstractBy 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.
Keywordstars: binaries: close stars: binaries: eclipsing stars: individual (V342UMa, V509Cam)
DOI10.1088/1674-4527/19/10/147
Indexed BySCI
Language英语
WOS KeywordSTAR LIGHT ; PERIOD ; EVOLUTION ; SYSTEM ; CATALOG
Funding ProjectNational 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
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000505165600010
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences ; program of the Light in China's Western Region ; Natural Science Foundation of Shandong Province ; Young Scholars Program of Shandong University, Weihai ; program of Tianshan Youth ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
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Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3316
Collection光学天文与技术应用研究室
Corresponding AuthorLi, Kai
Affiliation1.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
Recommended Citation
GB/T 7714
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):147.
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),147.
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):147.
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