YNAO OpenIR  > 双星与变星研究组
DETECTION OF A TERTIARY BROWN DWARF COMPANION IN THE sdB-TYPE ECLIPSING BINARY HS 0705+6700
Qian SB(钱声帮)1,2,3; Zhu LY(朱俐颖)1,2,3; Zola, S4,5; Liao WP(廖文萍)1,2,3; Liu L(刘亮)1,2,3; Li LJ(李临甲)1,2,3; Winiarski, M5; Kuligowska, E4; Kreiner, JM5; 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 LETTERS
2009-04-20
卷号695期号:2页码:L163-L165
DOI10.1088/0004-637X/695/2/L163
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Individual (Hs 0705+6700) Stars: Low-mass Brown Dwarfs Subdwarfs
摘要HS 0705+6700 is a short-period (P = 2.3 hr), close binary containing a hot sdB-type primary and a fully convective secondary. We have monitored this eclipsing binary for more than two years and as a result, 32 times of light minimum were obtained. Based on our new eclipse times together with these compiled from the literature, it is discovered that the observed-calculated curve of HS 0705+6700 shows a cyclic variation with a period of 7.15 years and a semiamplitude of 92.4 s. The periodic change was analyzed for the light-travel time effect that may be due to the presence of a tertiary companion. The mass of the third body is determined to be M3 sin i' = 0.0377(+/- 0.0043) M(circle dot) when a total mass of 0.617 M(circle dot) for HS 0705+6700 is adopted. For orbital inclinations i' >= 32.degrees 8, the mass of the tertiary component would be below the stable hydrogen-burning limit of M(3) similar to 0.072M(circle dot), and thus it would be a brown dwarf. The third body is orbiting the sdB-type binary at a distance shorter than 3.6 AU. HS 0705+6700 was formed through the evolution of a common envelope after the primary becomes a red giant. The detection of a substellar companion in HS 0705+6700 system at this distance from the binary could give some constraints on stellar evolution in such systems and the interactions between red giants and their companions.
项目资助者Chinese Natural Science Foundation [10778718, 10778707] ; National Key Fundamental Research Project [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157] ; Special Foundation of President ; West Light Foundation of the Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
URL查看原文
归档日期2009-05-21
WOS记录号WOS:000264872100009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]PRE-CATACLYSMIC BINARY ; SUBDWARF-B STARS ; HW VIR-TYPE ; MAGNETIC BRAKING ; PERIOD DECREASE ; CLOSE BINARIES ; ORBITAL PERIOD
引用统计
被引频次:41[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/114a53/5825
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.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, People's Republic of China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, People's Republic of China
3.Graduate University of the Chinese Academy of Sciences, 10049 Beijing, People's Republic of China
4.Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Krakow, Poland
5.Mt. Suhora Observatory, Cracow Pedagogical University ul. Podchorazych 2, 30-084 Krakow, Poland
推荐引用方式
GB/T 7714
Qian SB,Zhu LY,Zola, S,et al. DETECTION OF A TERTIARY BROWN DWARF COMPANION IN THE sdB-TYPE ECLIPSING BINARY HS 0705+6700[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,695(2):L163-L165.
APA Qian SB.,Zhu LY.,Zola, S.,Liao WP.,Liu L.,...&Qian, SB .(2009).DETECTION OF A TERTIARY BROWN DWARF COMPANION IN THE sdB-TYPE ECLIPSING BINARY HS 0705+6700.ASTROPHYSICAL JOURNAL LETTERS,695(2),L163-L165.
MLA Qian SB,et al."DETECTION OF A TERTIARY BROWN DWARF COMPANION IN THE sdB-TYPE ECLIPSING BINARY HS 0705+6700".ASTROPHYSICAL JOURNAL LETTERS 695.2(2009):L163-L165.
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
DETECTION OF A TERTI(222KB)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
[Zola, S]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
[Zola, S]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
[Zola, S]的文章
相关权益政策
暂无数据
收藏/分享
文件名: DETECTION OF A TERTIARY BROWN DWARF COMPANION IN THE sdB-TYPE ECLIPSING BINARY HS 0705+6700.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。