PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY CW CAS | |
Wang JJ(王晶晶)1,2,3![]() ![]() ![]() ![]() ![]() | |
刊名 | ASTRONOMICAL JOURNAL
![]() |
2014-11 | |
卷号 | 148期号:5 |
关键词 | binaries: close binaries: eclipsing stars: individual (CW Cas) |
ISSN号 | 0004-6256 |
通讯作者 | Wang, JJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
产权排序 | 第一完成单位 |
英文摘要 | New CCD photometric observations of overcontact binary CWCas were carried out in 2004 and 2011. In particular, the light curve obtained in 2004 shows a remarkable O'Connell effect. Compared with light curves in different observing seasons, variations were found. These variations can be explained by dark spot activities on the surface of at least one component. Using the Wilson-Devinney code with a spot model, we find that the photometric solutions confirm CWCas is a shallow W-subtype overcontact binary with a spotted massive component. Our new determined times of minimum light together with the others published in the literature were analyzed to find a change of orbital period. From the O - C curves, the period of the system shows a cyclic period change (P-3 = 69.9 yr, A(3) = 0.03196 days) superposed on the linear increase. The cyclic variation, if explained as the light-travel time effect, reveals the presence of a tertiary companion. |
学科主题 | Astronomy & Astrophysics |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
关键词[WOS] | RADIAL-VELOCITY ; LIGHT CURVES ; PERIOD CHANGES ; CONTACT BINARIES ; ORBITAL PERIOD ; CLOSE BINARIES ; CCD PHOTOMETRY ; STARS ; SYSTEMS ; WILSON |
收录类别 | SCI |
原文出处 | http://iopscience.iop.org/article/10.1088/0004-6256/148/5/95/meta |
语种 | 英语 |
WOS记录号 | WOS:000344141200021 |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/5893] ![]() |
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.National Astronomical Observatories/Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China 3.Graduate School of the Chinese Academy of Sciences, Yuquan Road 19, Shijingshan Block, 100049 Beijing, PR China |
推荐引用方式 GB/T 7714 | Wang JJ,Qian SB,He JJ,et al. PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY CW CAS[J]. ASTRONOMICAL JOURNAL,2014,148(5). |
APA | Wang JJ,Qian SB,He JJ,Li LJ,&Zhao EG.(2014).PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY CW CAS.ASTRONOMICAL JOURNAL,148(5). |
MLA | Wang JJ,et al."PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY CW CAS".ASTRONOMICAL JOURNAL 148.5(2014). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论