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The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff
Li, Kai1,2; Kim, Chun-Hwey3; Xia, Qi-Qi1; Michel, Raul4; Hu, Shao-Ming1; Gao, Xing5; Guo, Di-Fu1; Chen, Xu1
2020-05-01
Source PublicationASTRONOMICAL JOURNAL
ISSN0004-6256
Volume159Issue:5Pages:189
Contribution Rank5
AbstractIn this paper, we present the first light curve synthesis and orbital period change analysis of nine contact binaries around the short-period limit. It is found that all these systems are W-subtype contact binaries. One of them is a medium contact system while the others are shallow contact ones. Four of them manifest obvious O'Connell effect explained by a dark spot or hot spot on one of the component stars. Third light was detected in three systems. By investigating orbital period variations, we found that four of the targets display a secular period decrease while the others exhibit a long-term period increase. The secular period decrease is more likely caused by angular-momentum loss while the long-term period increase is due to mass transfer from the less massive component to the more massive one. Based on the statistic of 19 ultrashort-period contact binaries with known orbital period changes, we found that seven of them display long-term decrease (three of them also exhibit cyclic variations), ten of them manifest long-term increase while two of them only show cyclic variation, and that most of them are shallow contact binaries supporting the long timescale angular-momentum loss theory suggested by Stepien. For the three deep contact systems, we found that they are probably triple systems. The tertiary companion plays an essential role during their formation and evolution.
KeywordClose binary stars Eclipsing binary stars Stellar evolution
DOI10.3847/1538-3881/ab7cda
Indexed BySCI
Language英语
WOS KeywordTHERMAL RELAXATION OSCILLATION ; ECLIPSING BINARY ; STAR LIGHT ; CLOSE BINARIES ; EVOLUTION ; MASS ; LIMIT ; SYSTEMS
Funding ProjectNational Natural Science Foundation of China (NSFC)[11703016] ; NSFC[U1931103] ; Chinese Academy of Sciences (CAS)[U1931103] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Natural Science Foundation of Shandong Province[ZR2017PA009] ; Natural Science Foundation of Shandong Province[ZR2017PA010] ; Natural Science Foundation of Shandong Province[JQ201702] ; Young Scholars Program of Shandong University, Weihai[20820162003] ; Young Scholars Program of Shandong University, Weihai[20820171006] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201704] ; National Research Foundation of Korea[2020R1A4A2002885] ; UNAM under DGAPA[PAPIIT IN 100918] ; Supercomputing Center of Shandong University, Weihai ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Robert Martin Ayers Sciences Fund ; National Science Foundation ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; University of Arizona ; Brazilian Participation Group ; Brookhaven National Laboratory ; University of Cambridge ; University of Florida ; French Participation Group ; German Participation Group ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; New Mexico State University ; New York University ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000525633600001
PublisherIOP PUBLISHING LTD
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; NSFC ; Chinese Academy of Sciences (CAS) ; Natural Science Foundation of Shandong Province ; Young Scholars Program of Shandong University, Weihai ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects ; National Research Foundation of Korea ; UNAM under DGAPA ; Supercomputing Center of Shandong University, Weihai ; National Development and Reform Commission ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Robert Martin Ayers Sciences Fund ; National Science Foundation ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; University of Arizona ; Brazilian Participation Group ; Brookhaven National Laboratory ; University of Cambridge ; University of Florida ; French Participation Group ; German Participation Group ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; New Mexico State University ; New York University ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3464
Collection中国科学院新疆天文台
Corresponding AuthorLi, Kai
Affiliation1.Shandong Univ, Sch Space Sci & Phys, Inst Space Sci, Shandong Key Lab Opt Astron & Solar Terr Environm, Weihai 264209, Shandong, Peoples R China
2.Chungbuk Natl Univ, Inst Astrophys, Cheongju 28644, South Korea
3.Chungbuk Natl Univ, Dept Astron & Space Sci, Cheongju 361763, South Korea
4.Univ Nacl Autonoma Mexico, Inst Astron, Observ Astron Nacl, Apartado Postal 877, Ensenada 22830, Baja California, Mexico
5.Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China
Recommended Citation
GB/T 7714
Li, Kai,Kim, Chun-Hwey,Xia, Qi-Qi,et al. The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff[J]. ASTRONOMICAL JOURNAL,2020,159(5):189.
APA Li, Kai.,Kim, Chun-Hwey.,Xia, Qi-Qi.,Michel, Raul.,Hu, Shao-Ming.,...&Chen, Xu.(2020).The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff.ASTRONOMICAL JOURNAL,159(5),189.
MLA Li, Kai,et al."The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff".ASTRONOMICAL JOURNAL 159.5(2020):189.
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