The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her | |
Lu, Hongpeng1,2; Zhang, Liyun1,2; Han, Xianming L.3; Pi, Qingfeng1,2; Wang, Daimei1,2 | |
刊名 | NEW ASTRONOMY |
2016-10-01 | |
卷号 | 48页码:58-65 |
关键词 | Stars:Binaries:Eclipsing Stars:Individual V1044 Her Stars Period Variation |
ISSN号 | 1384-1076 |
DOI | 10.1016/j.newast.2016.04.006 |
文献子类 | Article |
英文摘要 | We present new CCD photometric observations of V1044 Her obtained on May 22, 23 and 24, 2015. From our data, we derived five new light curve minimum times. Combining our new results with previously available CCD light minimum times, we derived an updated ephemeris and discovered that the period of this binary system exhibits an oscillation. The cyclic variation may be caused by the light-time effect via the presence of a third body or magnetic activity cycle. We calculated the corresponding period of the third body to be 14.1 +/- 1.4 years or magnetic cycle to be 12.2 +/- 0.7 years. We analyzed our new asymmetric light curves to obtain photometric solutions and starspot parameters using the Wilson and Devinney program. The final results show that V1044 Her is a contact binary system with a degree of contact factor f = 3.220(+/- 0.002)%. |
学科主题 | 天文学 ; 天体物理学 ; 实测天体物理学 ; 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 |
资助项目 | Joint Fund of Astronomy of the National Natural Science Foundation of China ; Chinese Academy of Sciences[U1431114] ; Chinese Academy of Sciences[11263001] ; Joint Fund of Department of Science and Technology of Guizhou Province ; Guizou University[[2014]7642] |
WOS关键词 | CONTACT BINARY ; ORBITAL-PERIOD ; LIGHT-CURVE ; CLOSE BINARIES ; STAR LIGHT ; SYSTEM ; ANDROMEDAE ; CASSIOPEIAE ; MODULATION ; TAURI |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000377819100010 |
资助机构 | Joint Fund of Astronomy of the National Natural Science Foundation of China ; Chinese Academy of Sciences[U1431114, 11263001] ; Joint Fund of Department of Science and Technology of Guizhou Province ; Guizou University[[2014]7642] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/9612] |
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 | Zhang, Liyun |
作者单位 | 1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China 3.Department of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA |
推荐引用方式 GB/T 7714 | Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,et al. The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her[J]. NEW ASTRONOMY,2016,48:58-65. |
APA | Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,Pi, Qingfeng,&Wang, Daimei.(2016).The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her.NEW ASTRONOMY,48,58-65. |
MLA | Lu, Hongpeng,et al."The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her".NEW ASTRONOMY 48(2016):58-65. |
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