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Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc

文献类型：期刊论文

作者Yuc, Qiang1,2,3; Zhang, Li-Yun1,2,3; Han, Xian-Ming L.1,2,3,4; Lu, Hong-Peng1,2,3; Long, Liu1,2,3; Yan, Yan3,5
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2019-07-01
卷号19期号:7页码:20
关键词stars: binaries: eclipsing stars: individual (FG Sct, VZ Lib, VZ Psc) stars: starspot
ISSN号1674-4527
DOI10.1088/1674-4527/19/7/97
英文摘要We present eight sets of new light curves for binaries FG Sct, VZ Lib and VZ Psc, which are all contact eclipsing binaries with short orbital periods. We carried out our observations from 2016 to 2017 using the 60-cm telescope administered by National Astronomical Observatories, Chinese Academy of Sciences, the Holcomb Observatory at Butler University and the SARA-CT telescope in Chile. We firstly determined the orbital parameters of FG Sct using the O - C method and obtained photometric solutions utilizing the updated W-D program. We also studied its period variation and discovered that its orbital period is decreasing at a rate of 6.39(+/- 0.24) x 10(-8) d yr(-1). which was likely caused by mass transfer from the primary component to the secondary component or angular momentum interchange between the two components via magnetic interactions. For VZ Lib and VZ Psc, we simultaneously analyzed their BV RI light curves in conjunction with the published radial velocities. In order to obtain the orbital parameters of VZ Lib, we also analyzed its period variation and revised cyclic change, which could be attributed to either the light-time effect due to a tertiary companion or magnetic activity cycle mechanism. We derived the periods of the tertiary component of VZ Lib to be 48.7(+/- 0.1) yr or magnetic cycle to be 46.9(+/- 1.9) yr. Strong emission lines at Ca II H+K, H alpha, H beta, H gamma and Ca II IRT were detected in the LAMOST spectra of VZ Psc, which imply chromospheric activities in this binary system.
WOS关键词RS CANUM-VENATICORUM ; COLOR LIGHT CURVES ; MAGNETIC ACTIVITY ; RADIAL-VELOCITY ; PHYSICAL PARAMETERS ; CONTACT BINARIES ; COMAE BERENICES ; STAR LIGHT ; SKY SURVEY ; SYSTEM
资助项目NSFC[U1631236] ; NSFC[U1431114] ; CAS[U1631236] ; CAS[U1431114] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000475427200008
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构NSFC ; NSFC ; CAS ; CAS ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; NSFC ; NSFC ; CAS ; CAS ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; NSFC ; NSFC ; CAS ; CAS ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; NSFC ; NSFC ; CAS ; CAS ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
源URL[http://ir.bao.ac.cn/handle/114a11/27014]  
专题中国科学院国家天文台
通讯作者Zhang, Li-Yun
作者单位1.Guizhou Univ, Dept Phys & Astron, Coll Phys, Guiyang 550025, Guizhou, Peoples R China
2.Guizhou Univ, Guizhou Prov Key Lab Publ Big Data, Guiyang 550025, Guizhou, Peoples R China
3.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100101, Peoples R China
4.Butler Univ, Dept Phys & Astron, Indianapolis, IN 46208 USA
5.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yuc, Qiang,Zhang, Li-Yun,Han, Xian-Ming L.,et al. Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(7):20.
APA Yuc, Qiang,Zhang, Li-Yun,Han, Xian-Ming L.,Lu, Hong-Peng,Long, Liu,&Yan, Yan.(2019).Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(7),20.
MLA Yuc, Qiang,et al."Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.7(2019):20.

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