Photometric followup investigations on LAMOST survey target Ly And
文献类型:期刊论文
作者 | Lu, Hong-peng1,2; Zhang, Li-yun1,2![]() |
刊名 | NEW ASTRONOMY
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出版日期 | 2017-02-01 |
卷号 | 51页码:59-64 |
关键词 | Binaries Close - Binaries Eclipsing - Stars Period Variation - Stars Individual Ly And |
ISSN号 | 1384-1076 |
DOI | 10.1016/j.newast.2016.08.008 |
文献子类 | Article |
英文摘要 | We present a low-dispersion spectrum and two sets of CCD photometric light curves of the eclipsing binary LY And for the first time. The spectrum of LY And was classified as G2. We derived an updated ephemeris based on all previously available and our newly acquired minimum light times. Our analyses of LY And light curve minimum times reveals that the differences between calculated and observed minimum times for LY And can be represented by an upward parabolic curve, which means its orbital period is increasing with a rate of 1.88 (+/- 0.13) x 10(-7) days/year. This increase in orbital period may be interpreted as mass transfer from the primary component to the secondary component, with a rate of dM1/dt = -4.54 x 10(-8) M-circle dot/year. By analyzing our CCD photometric light curves obtained in 2015, we obtained its photometric solution with the Wilson-Devinney program. This photometric solution also fits very well our light curves obtained in 2014. Our photometric solution shows that LY And is a contact eclipsing binary and its contact factor is f = (17.8 +/- 1.9)%. Furthermore, both our spectroscopic and photometric data show no obvious chromospheric activity of LY And. (C) 2016 Elsevier B.V. All rights reserved. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
WOS关键词 | ORBITAL PERIOD MODULATION ; BINARY-STAR LIGHT ; CLOSE BINARIES ; CURVES |
资助项目 | National Development and Reform Commission ; Chinese Academy of Sciences (CAS)[11263001] ; National Development and Reform Commission ; Chinese Academy of Sciences (CAS)[U1431114] ; National Development and Reform Commission ; Chinese Academy of Sciences (CAS)[U1631236] ; National Natural Science Foundation of China (NSFC)[U1431114] ; National Natural Science Foundation of China (NSFC)[U1631236] ; NSFC[11263001] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:000385595000009 |
出版者 | ELSEVIER SCIENCE BV |
资助机构 | National Development and Reform Commission ; Chinese Academy of Sciences (CAS)[11263001, U1431114, U1631236] ; National Natural Science Foundation of China (NSFC)[U1431114, U1631236] ; NSFC[11263001] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/9748] ![]() |
专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Lu, Hong-peng |
作者单位 | 1.College of Physics/Department of Physics and Astronomy & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, P.R. China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, P.R. China 3.Dept. of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA |
推荐引用方式 GB/T 7714 | Lu, Hong-peng,Zhang, Li-yun,Han, Xianming L.,et al. Photometric followup investigations on LAMOST survey target Ly And[J]. NEW ASTRONOMY,2017,51:59-64. |
APA | Lu, Hong-peng,Zhang, Li-yun,Han, Xianming L.,Pi, Qing-feng,&Wang, Dai-mei.(2017).Photometric followup investigations on LAMOST survey target Ly And.NEW ASTRONOMY,51,59-64. |
MLA | Lu, Hong-peng,et al."Photometric followup investigations on LAMOST survey target Ly And".NEW ASTRONOMY 51(2017):59-64. |
入库方式: OAI收割
来源:云南天文台
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