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 | Qiang Yue4; LiYun Zhang4; XianMing LHan4; HongPeng Lu4; Liu Long4; Yan Yan3 |
| 刊名 | 天文和天体物理学研究:英文版
 |
| 出版日期 | 2019 |
| 卷号 | 19.0期号:007页码:67 |
| 关键词 | stars:binaries:eclipsing stars:individual (FG Sct, VZ Lib, VZ Psc) stars:starspot |
| ISSN号 | 1674-4527 |
| 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)×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,Hα,Hβ,Hγ and Ca II IRT were detected in the LAMOST spectra of VZ Psc,which imply chromospheric activities in this binary system. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59692]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院南京天文光学技术研究所 2.Department of Physics and Astronomy,Butler University,Indianapolis 3.CAS Key Laboratory of Solar Activity,National Astronomical Observatories 4.College of Physics/Department of Physics and Astronomy & Guizhou Provincial Key Laboratory of Public Big Data,Guizhou University |
| 推荐引用方式 GB/T 7714 | Qiang Yue,LiYun Zhang,XianMing LHan,et al. Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct,VZ Lib and VZ Psc[J]. 天文和天体物理学研究:英文版,2019,19.0(007):67. |
| APA | Qiang Yue,LiYun Zhang,XianMing LHan,HongPeng Lu,Liu Long,&Yan Yan.(2019).Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct,VZ Lib and VZ Psc.天文和天体物理学研究:英文版,19.0(007),67. |
| MLA | Qiang Yue,et al."Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct,VZ Lib and VZ Psc".天文和天体物理学研究:英文版 19.0.007(2019):67. |
入库方式： OAI收割
来源：国家天文台
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