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Is V899 Herculis an unsolved quadruple system containing double close binary stars?
Qian SB(钱声帮)1,2; Liao WP(廖文萍)1,2; He JJ(何家佳)1,2; Yuan JZ(袁金照)1,2; Zhu LY(朱俐颖)1,2; Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2006-10
卷号12期号:1页码:33-37
DOI10.1016/j.newast.2006.05.001
产权排序第1完成单位
收录类别SCI ; EI
关键词Stars : Binaries : Close Stars : Binaries : Eclipsing Stars : Individuals V899 Herculis Stars : Multiple
摘要Orbital period variation of the W UMa-type eclipsing binary, V899 Herculis, discovered by the Hipparcos satellite was investigated based on all available photoelectric and CCD times of light minimum. It is discovered that the orbital period of the binary shows a cyclic change with an amplitude of 0.0117 days. The cyclic period change can be explained as the light-travel time orbit of a tertiary component in the system, which is in agreement with the spectroscopic result obtained by Lu et al. [Lu, W., Rucinski, S.M., Ogloza, W., 2001. AJ 122, 402] who found that the system, of which V899 Herculis is a fainter component (13), is a triple, even quadruple and with the photometric result obtained by Ozdemir et al. [Ozdemir, S., Demircan, O., Erdem, A., Cicek, C., Bulut, I., Soydugan, E., Soydugan, F., 2002. A&A 387, 240] who reported a large amount of third light (L-3 similar to 0.68) of the system. The third body (A) rotates around the eclipsing pair in a period of 3.7 years. Lu et al. [Lu, W., Rucinski, S.M., Ogloza, W., 2001. AJ 122, 402] reported that the tertiary component is F5-type main-sequence star. However, the present analysis shows that the mass of the third component is no less than 2.8 M circle dot, which is larger than the mass of an F5-type main-sequence star suggesting that the tertiary component may be a non-eclipsing close binary. Therefore, the system may be a possible unsolved quadruple system containing double close binary stars. It is a good astrophysical laboratory to study the formation and evolution of binary and multiple system. The timescale for the formation of the G-type overcontact binary (V899 Herculis) via AML should be shorter than the main-sequence time of an F5-type star. (c) 2006 Elsevier B.V. All rights reserved.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
归档日期2006-09-19
WOS记录号WOS:000241126000005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EVOLUTION ; ORIGIN
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5787
专题双星与变星研究组
通讯作者Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, PR China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, PR China
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GB/T 7714
Qian SB,Liao WP,He JJ,et al. Is V899 Herculis an unsolved quadruple system containing double close binary stars?[J]. NEW ASTRONOMY,2006,12(1):33-37.
APA Qian SB,Liao WP,He JJ,Yuan JZ,Zhu LY,&Qian, SB .(2006).Is V899 Herculis an unsolved quadruple system containing double close binary stars?.NEW ASTRONOMY,12(1),33-37.
MLA Qian SB,et al."Is V899 Herculis an unsolved quadruple system containing double close binary stars?".NEW ASTRONOMY 12.1(2006):33-37.
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