YNAO OpenIR  > 双星与变星研究组
VW Bootis: The shortest period close binary system at the beginning of the overcontact phase
Qian SB(钱声帮)1,2; Zhu LY(朱俐颖)1,2; Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2002-04-01
卷号568期号:2页码:1004-1007
DOI10.1086/338964
产权排序第1完成单位
收录类别SCI
关键词Binaries : Close Stars : Evolution Stars : Individual (Vw Bootis)
摘要A new orbital period of the very short-period (0.342 day) close binary system VW Bootis is determined and its O-C curve is formed based on the analysis of all available times of light minimum. It is discovered that the orbital period of the system shows a secular decrease with a rate of dP/dt = 1.56 x 10(-7) days per year. Since the order of the period decrease is larger than the thermal conservative mass-transfer estimate, the mass transfer would be dynamical or the period decrease is caused by the combination of mass transfer and angular momentum loss via magnetic braking. To satisfy such a period decrease, a conservative mass transfer (with no magnetic effect) from the more massive to the less massive component would be of the order dm/dt = 1.12 x 10(-7) M-. per year. The study of Rainger, Bell, & Hilditch ( 1990) has shown that VW Bootis is a marginal-contact system and is in the transition phase from B-type to W Ursae Majoris type. A hot spot on the secondary is also found near the neck of the binary star, indicating a primary-to-secondary mass transfer, which is in good agreement with the long time period decrease of the system. These findings suggest that VW Bootis is at the beginning of the overcontact phase. After the formation of a common convective envelope, the system will evolve into a normal overcontact binary.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2002-06-20
WOS记录号WOS:000174625700043
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]URSAE MAJORIS SYSTEMS ; CONTACT
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5760
专题双星与变星研究组
通讯作者Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, Peoples Republic of China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC)
推荐引用方式
GB/T 7714
Qian SB,Zhu LY,Qian, SB . VW Bootis: The shortest period close binary system at the beginning of the overcontact phase[J]. ASTROPHYSICAL JOURNAL,2002,568(2):1004-1007.
APA Qian SB,Zhu LY,&Qian, SB .(2002).VW Bootis: The shortest period close binary system at the beginning of the overcontact phase.ASTROPHYSICAL JOURNAL,568(2),1004-1007.
MLA Qian SB,et al."VW Bootis: The shortest period close binary system at the beginning of the overcontact phase".ASTROPHYSICAL JOURNAL 568.2(2002):1004-1007.
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
VW Bootis_ The Short(105KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Qian SB(钱声帮)]的文章
[Zhu LY(朱俐颖)]的文章
[Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[Qian SB(钱声帮)]的文章
[Zhu LY(朱俐颖)]的文章
[Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[Qian SB(钱声帮)]的文章
[Zhu LY(朱俐颖)]的文章
[Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: VW Bootis_ The Shortest Period Close Binary System at the Beginning of the Overcontact Phase.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。