Multi-color photometric investigation of the totally eclipsing binary NO Camelopardalis
文献类型：期刊论文
| 作者 | Zhou X(周肖)1,2,3 ; Qian SB(钱声帮)1,2,3,4; Zhang B(张斌)1,2,3,4
|
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 69期号:2 |
| ISSN号 | 0004-6264 |
| 关键词 | binaries: close binaries: eclipsing stars: individual (NO Camelopardalis) |
| 通讯作者 | Zhou, Xiao(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Peoples R China) |
| 产权排序 | 第1完成单位 |
| 英文摘要 | Multi-color photometric light curves of NO Camelopardalis in V, R-C, and I-C bands are obtained and analyzed simultaneously using the Wilson-Devinney program. The solutions suggest that NO Cam is an A-subtype overcontact binary with a mass ratio of q = 0.439 and a contact degree of f = 55.5%. The small temperature difference (Delta T = 44 K) between its two components indicates that the system is under thermal contact. The high orbital inclination (i = 84.degrees 5) strengthens our confidence in the parameters determined from the light curves. All available times of minimum light are collected and period variations are analyzed for the first time. The O-C curve reveals that its period is increasing continuously at a rate of dP/dt = + 1.46 x 10(-9), which can be explained by mass transfer from the less massive component to the more massive one. After the upward parabolic variation is subtracted, the residuals suggest that there may be a cyclic variation with a period of 2.23 yr and an amplitude of A(3) = 0.00153 d, which may due to the light-travel-time effect arising from the gravitational influence of a close-in tertiary component. The close-in companion reveals that early dynamic interaction among a triple system may have played a very important role in the formation of the WUMa-type binaries. |
| 学科主题 | 天文学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CONTACT BINARY ; STELLAR COMPANION ; SHALLOW CONTACT ; LIGHT CURVES ; STARS ; SYSTEM ; DEEP |
| 收录类别 | SCI |
| 原文出处 | https://academic.oup.com/pasj/article-lookup/doi/10.1093/pasj/psx010 |
| 语种 | 英语 |
| WOS记录号 | WOS:000401118500023 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10069]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P.R. China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P.R. China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P.R. China 4.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, P.R. China |
| 推荐引用方式 GB/T 7714 | Zhou X,Qian SB,Zhang B. Multi-color photometric investigation of the totally eclipsing binary NO Camelopardalis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2017,69(2). |
| APA | Zhou X,Qian SB,&Zhang B.(2017).Multi-color photometric investigation of the totally eclipsing binary NO Camelopardalis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,69(2). |
| MLA | Zhou X,et al."Multi-color photometric investigation of the totally eclipsing binary NO Camelopardalis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 69.2(2017). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。