A model for contact binary systems
文献类型：期刊论文
| 作者 | Song HF(宋汉峰)1,2 ; Huang RQ(黄润乾)1; Bi SL(毕少兰)1
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| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2007 |
| 卷号 | 7期号:4页码:539-550 |
| 关键词 | stars : binaries stars : evolution |
| ISSN号 | 1009-9271 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Song, HF (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | A model for contact binary systems is presented, which incorporates the following special features: a) The energy exchange between the components is based on the understanding that the energy exchange is due to the release of potential, kinetic and thermal energies of the exchanged mass. b) A special form of mass and angular momentum loss occurring in contact binaries is losses via the outer Lagrangian point. c) The effects of spin, orbital rotation and tidal action on the stellar structure as well as the effect of meridian circulation on the mixing of the chemical elements are considered. d) The model is valid not only for low-mass contact binaries but also for high-mass contact binaries. For illustration, we used the model to trace the evolution of a massive binary system consisting of one 12M(circle dot) and one 5M(circle dot) star. The result shows that the start and end of the contact stage fall within the semi-detached phase during which the primary continually transfers mass to the secondary. The time span of the contact stage is short and the mass transfer rate is very large. Therefore, the contact stage can be regarded as a special part of the semi-detached phase with a large mass transfer rate. Both mass loss through the outer Lagrangian point and oscillation between contact and semi-contact states can occur during the contact phase, and the effective temperatures of the primary and the secondary are almost equal. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EVOLUTION ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1009-9271/7/4/10/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000249365900010 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5190]  |
| 专题 | 云南天文台_恒星物理研究组 |
| 作者单位 | 1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 2.Graduate School of Chinese Academy of Sciences, Beijing 100049 |
| 推荐引用方式 GB/T 7714 | Song HF,Huang RQ,Bi SL. A model for contact binary systems[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(4):539-550. |
| APA | Song HF,Huang RQ,&Bi SL.(2007).A model for contact binary systems.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(4),539-550. |
| MLA | Song HF,et al."A model for contact binary systems".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.4(2007):539-550. |
入库方式： OAI收割
来源：云南天文台
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