The low-mass classic Algol-type binary UU Leo revisited
Yang, Yuan-Gui1,2; Yang, YG (reprint author), Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2013-12
卷号13期号:12页码:1471-1481
DOI10.1088/1674-4527/13/12/008
收录类别SCI
关键词Stars (Including Multiple): Binaries: Close Stars: Individual (Uu Leo)
摘要New multi-color photometry of the eclipsing binary UU Leo, acquired from 2010 to 2013, was carried out by using the 60-cm and 85-cm telescopes at the Xinglong station, which is administered by National Astronomical Observatories, Chinese Academy of Sciences. With the updated Wilson-Devinney code, the photometric solution was derived from BV R light curves. The results imply that UU Leo is a semi-detached Algol-type binary, with a mass ratio of q = 0.100 (+/- 0.002). The change in orbital period was reanalyzed based on all available eclipsing times. The O - C curve could be described by an upward parabola superimposed on a quasi-sinusoidal curve. The period and semi-amplitudes are P-mod = 54.5 (+/- 1.1) yr and A = 0.0273(d) (+/- 0.0015(d)), which may be attributed to the light-time effect via the presence of an invisible third body. The long-term period increases at a rate of dP/d t = +4.64(+/- 0.14) x 10(-7) d yr(-1), which may be interpreted by the conserved mass being transferred from the secondary to the primary. With mass being transferred, the low-mass Algol-type binary UU Leo may evolve into a binary system with a main sequence star and a helium white dwarf.
项目资助者National Natural Science Foundation of China(U1231102,11133007) ; Anhui Provincial Natural Science Foundation(1208085MA04) ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(OP201110) ; Anhui Provincial Foundation for Academic ; Technological Leader Reserver Candidates
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000327875500008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD ; CLOSE BINARIES ; LIGHT CURVES ; STARS ; CATALOG ; CVN
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被引频次:4[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/114a53/9416
专题中国科学院天体结构与演化重点实验室
通讯作者Yang, YG (reprint author), Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China.
作者单位1.School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
2.Key Laboratory of the Structure and Evolutionary of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
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Yang, Yuan-Gui,Yang, YG . The low-mass classic Algol-type binary UU Leo revisited[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(12):1471-1481.
APA Yang, Yuan-Gui,&Yang, YG .(2013).The low-mass classic Algol-type binary UU Leo revisited.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(12),1471-1481.
MLA Yang, Yuan-Gui,et al."The low-mass classic Algol-type binary UU Leo revisited".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.12(2013):1471-1481.
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