The formation of subdwarf B stars | |
Han ZW(韩占文)1; Podsiadlowski, P2; Maxted, PFL3; Marsh, TR4; Ivanova, N5 | |
会议录名称 | ASTRONOMICAL SOCIETY OF THE PACIFIC (ASP) CONFERENCE SERIES - EXOTIC STARS AS CHALLENGES TO EVOLUTION, PROCEEDINGS |
2002 | |
卷号 | 279 |
页码 | 285-290 |
会议录编者/会议主办者 | Tout, CA; VanHamme, W |
产权排序 | 第1完成单位 |
收录类别 | CPCI |
会议名称 | 187 Colloquium on Exotic Stars as Challenges to Evolution |
会议日期 | 2002-03-04 |
会议地点 | MIAMI, FL |
会议赞助商 | Int Astron Union; Max-Planck Inst Astron; Florida Int Univ, Div Sponsored Res; Florida Int Univ, Coll Art & Sci; Florida Int Univ, Dept Phys |
摘要 | We performed full binary evolution calculations and carried out binary population synthesis studies in order to investigate the formation of subdwarf B (sdB) stars via, the channels of stable Roche lobe overflow (RLOF), common envelope ejection and helium white dwarf mergers. Our model is successful in the explanation of observational properties of sdB stars, e.g. we explained the orbital period - minimum companion mass (log P - M-comp) diagram, the effective temperature - surface gravity (T-eff - log g) diagram, the orbital period distribution, the log(gtheta(4)) (theta = 5040/T-eff) distribution, the mass function distribution, the binary. fraction of sdB stars, the fraction of sdB binaries with WD companions, the birth rates, the space number densities, etc. We conclude that (a) the first RLOF needs to be more stabilized than commonly assumed, (b) the first stable RLOF is not conservative, (c) common envelope ejection is very efficient. |
项目资助者 | N/A |
语种 | 英语 |
学科领域 | 天文学 ; 天体物理学 ; 恒星与银河系 |
文章类型 | Proceedings Paper |
出版者 | ASTRONOMICAL SOC PACIFIC |
出版地 | 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA |
ISBN号 | 1-58381-122-2 |
URL | 查看原文 |
归档日期 | 2003-04-02 |
WOS记录号 | WOS:000180451700035 |
WOS研究方向 | Astronomy & Astrophysics |
WOS类目 | Astronomy & Astrophysics |
关键词[WOS] | Horizontal-branch Stars ; Low-mass ; Stellar Evolution ; Sdb Stars ; Parameters ; Objects ; Birthrate ; Origin ; Dwarfs |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.ynao.ac.cn/handle/114a53/221 |
专题 | 大样本恒星演化研究组 |
作者单位 | 1.Yunnan Observatory, NAOC, CAS, Kunming 650011, P. R. China 2.Astrophysics, NAPL, Oxford University, Keble Road, Oxford OX1 3RH, UK 3.Department of Physics, Keele University, Staffordshire ST5 5BG, UK 4.University of Southampton, Department of Physics & Astronomy, Highfield, Southampton S017 1BJ, UK 5.Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208, USA |
第一作者单位 | 中国科学院云南天文台 |
推荐引用方式 GB/T 7714 | Han ZW,Podsiadlowski, P,Maxted, PFL,et al. The formation of subdwarf B stars[C]//Tout, CA; VanHamme, W. 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA:ASTRONOMICAL SOC PACIFIC,2002:285-290. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
The Formation of Sub(555KB) | 会议论文 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
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