Detection of six massive contact binaries with tertiary component candidates in the Small Magellanic Cloud
文献类型:期刊论文
作者 | Wu CQ(吴楚齐)1,2,3,4; Qian SB(钱声帮)1,2,3,4; Li FX(李福兴)1,2,4; Zhu LY(朱俐颖)1,2,3,4; Zhao EG(赵二刚)1,2,4; Liao WP(廖文萍)1,2,3,4 |
刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN |
出版日期 | 2023 |
ISSN号 | 0004-6264 |
关键词 | contact binary stars early stellar evolution eclipsing binary stars Small Magellanic Cloud |
DOI | 10.1093/pasj/psad037 |
产权排序 | 第1完成单位 |
文献子类 | Article; Early Access |
英文摘要 | To study massive binaries in different evolution stages or environments, we use the Small Magellanic Cloud (SMC) as our target because the metallicity in the SMC is much lower than that in our Milky Way. The period change of early-type close binary systems in the SMC was studied based on OGLE collections. Six of these systems are found to have periodic period changes. Since all of them are of early type, the light-traveltime effect probably created by these massive binaries with third bodies is used to explain such a phenomenon. We use the Wilson-Devinney code (WD method) to analyze their I-band photometric light curves. The results show the six third bodies as having orbital periods from 6.41-24.65 yr and minimum masses from 0.31-4.11 M-?. Among all six systems, three have a negative ?P, which means that their periods keep decreasing. In addition, from the WD result, we find there are three deep-contact binaries, one intermediate contact binary, and two shallow-contact binaries. The fraction of companions in massive contact binaries is quite high based on this sample, which may demonstrate the notion of high multiplicity in massive binary stars. This might mean that additional components may play an important role in the evolution of massive close binaries. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
WOS关键词 | GRAVITATIONAL LENSING EXPERIMENT ; ECLIPSING BINARIES ; CLOSE-BINARY ; LIGHT CURVES ; STARS ; EVOLUTION ; SYSTEM ; PERIOD ; ALGOL ; MULTIPLICITY |
资助项目 | Chinese Natural Science Foundation[11933008] ; Chinese Natural Science Foundation[11873017] ; basic research project of Yunnan Province[202001AT070091] ; basic research project of Yunnan Province[202201AT070180] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:001002773800001 |
资助机构 | Chinese Natural Science Foundation[11933008, 11873017] ; basic research project of Yunnan Province[202001AT070091, 202201AT070180] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26061] |
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 |
通讯作者 | Wu CQ(吴楚齐); Li FX(李福兴) |
作者单位 | 1.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, Kunming 650216, P. R. China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, P. R. China; 3.University of Chinese Academy of Sciences, No. 1 Yanqihu East Rd, Huairou District, Beijing 101408, P. R. China; 4.Yunnan Observatories, Chinese Academy of Sciences (CAS), PO Box 110, Kunming 650216, P. R. China; |
推荐引用方式 GB/T 7714 | Wu CQ,Qian SB,Li FX,et al. Detection of six massive contact binaries with tertiary component candidates in the Small Magellanic Cloud[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2023. |
APA | Wu CQ,Qian SB,Li FX,Zhu LY,Zhao EG,&Liao WP.(2023).Detection of six massive contact binaries with tertiary component candidates in the Small Magellanic Cloud.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN. |
MLA | Wu CQ,et al."Detection of six massive contact binaries with tertiary component candidates in the Small Magellanic Cloud".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2023). |
入库方式: OAI收割
来源:云南天文台
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