A SOLAR-TYPE STELLAR COMPANION TO A DEEP CONTACT BINARY IN A QUADRUPLE SYSTEM
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; Zhang J(张嘉)1,2; Jiang, L. -Q.4; Zhang B(张斌)1,2,3; Kreiner, J.5
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2016-02-01 |
| 卷号 | 817期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | binaries: close binaries: eclipsing stars: evolution stars: individual (V776 Cas) |
| 通讯作者 | Zhou, X (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China |
| 产权排序 | 第一完成单位 |
| 英文摘要 | The four-color (B, V, R-c, I-c) light curves of V776 Cas are presented and analyzed using the Wilson-Devinney method. It is discovered that V776 Cas is an early F-type (F2V) overcontact binary with a very high contact degree (f = 64.6%) and an extremely low-mass ratio (q = 0.130), which indicate that it is at the final evolutionary stage of cool short-period binaries. The mass of the primary and secondary stars are calculated to be M-1 = 1.55 (+/- 0.04) M circle dot, M-2 = 0.20(+/- 0.01) M circle dot. V776 Cas is supposed to be formed from an initially detached binary system via the loss of angular momentum due to the magnetic wind. The initial masses of the present primary and secondary components are calculated to be M-1i = 0.86(+/- 0.10) M circle dot and M-2i = 2.13(+/- 0.04) M circle dot. The observed-calculated curve exhibits a cyclic period variation, which is due to the light-travel time effect caused by the presence of a third component with a period of 23.7 years. The mass of the third component is estimated to be M3 = 1.04(+/- 0.03) M circle dot and the orbital inclination of the third component is calculated to be i' = 33 degrees.1. The distance of the binary system to the mass center of the triple system is calculated to be a'(12) = 3.45 AU. The presence of the close-in tertiary component may play an important role in the formation and evolution of this binary system by drawing angular momentum from the central system. |
| 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] | STAR LIGHT CURVES ; VELOCITY CURVES ; RADIAL-VELOCITY ; UMA ; PARAMETERS ; EVOLUTION ; ORIGIN ; CASSIOPEIAE ; COMPONENTS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.3847/0004-637X/817/2/133/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000369437900050 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9333]  |
| 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 (CAS), P.O. Box 110, 650216 Kunming, China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, China 3.University of Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China 4.Department of Physics, School of Science, Sichuan University of Science & Engineering, Zigong, 643000, China 5.Mt. Suhora Astronomical Observatory, Pedagogical University of Cracow, Poland |
| 推荐引用方式 GB/T 7714 | Zhou X,Qian SB,Zhang J,et al. A SOLAR-TYPE STELLAR COMPANION TO A DEEP CONTACT BINARY IN A QUADRUPLE SYSTEM[J]. ASTROPHYSICAL JOURNAL,2016,817(2). |
| APA | Zhou X,Qian SB,Zhang J,Jiang, L. -Q.,Zhang B,&Kreiner, J..(2016).A SOLAR-TYPE STELLAR COMPANION TO A DEEP CONTACT BINARY IN A QUADRUPLE SYSTEM.ASTROPHYSICAL JOURNAL,817(2). |
| MLA | Zhou X,et al."A SOLAR-TYPE STELLAR COMPANION TO A DEEP CONTACT BINARY IN A QUADRUPLE SYSTEM".ASTROPHYSICAL JOURNAL 817.2(2016). |
入库方式： OAI收割
来源：云南天文台
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