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LUT REVEALS A NEW MASS-TRANSFERRING SEMI-DETACHED BINARY
Qian SB(钱声帮)1,2,3; Zhou X(周肖)1,2,3; Zhu LY(朱俐颖)1,2,3; Zejda, M.4; Soonthornthum, B.5; Zhao EG(赵二刚)1,2,3; Zhang J(张嘉)1,2; Zhang B(张斌)1,2,3; Liao WP(廖文萍)1,2; Qian, SB (reprint author),Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2015-12
卷号150期号:6
DOI10.1088/0004-6256/150/6/193
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Evolution Stars: Individual (Gq Dra)
摘要GQ Dra is a short-period eclipsing binary in a double stellar system that was discovered by Hipparcos. Complete light curves in the UV band were obtained with the Lunar-based Ultraviolet Telescope in 2014 November and December. Photometric solutions are determined using the W-D (Wilson and Devinney) method. It is discovered that GQ Dra is a classical Algol-type semi-detached binary where the secondary component is filling the critical Roche lobe. An analysis of all available times of. minimum light suggests that the orbital period is increasing continuously at a rate of (P)over dot = +3.48(+/- 0.23) x 10(-7) days yr(-1). This could be explained by mass transfer from the secondary to the primary, which is in agreement with the semi-detached configuration with a lobe-filling secondary. By assuming a conservation of mass and angular momentum, the mass transfer rate is estimated as (m)over dot = 9.57(+/- 0.63) x 10(-8)M(circle dot) yr(-1). All of these results reveal that GQ Dra is a mass-transferring semi-detached binary in a double system that was formed from an initially detached binary star. After the massive primary evolves to fill the critical Roche lobe, the mass transfer will be reversed and the binary will evolve into a contact configuration with two sub-giant or giant component stars.
项目资助者Chinese Natural Science Foundation(11133007,11325315) ; Key Research Program of the Chinese Academy of Sciences(KGZD-EW-603) ; Science Foundation of Yunnan Province(2012HC011) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09010202)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2016-04-12
WOS记录号WOS:000366588600028
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ULTRAVIOLET TELESCOPE ; DD MONOCEROTIS ; LIGHT CURVES ; STARS
引用统计
被引频次:3[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/114a53/9388
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Qian, SB (reprint author),Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, China
2.Key Laboratory of the Structure and Evolution Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China
4.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, CZ-611 37 Brno, Czech Republic
5.National Astronomical Research Institute of Thailand, 191 Siriphanich Bldg., Huay Kaew Rd., Chiang Mai 50200, Thailand
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Qian SB,Zhou X,Zhu LY,et al. LUT REVEALS A NEW MASS-TRANSFERRING SEMI-DETACHED BINARY[J]. ASTRONOMICAL JOURNAL,2015,150(6).
APA Qian SB.,Zhou X.,Zhu LY.,Zejda, M..,Soonthornthum, B..,...&Qian, SB .(2015).LUT REVEALS A NEW MASS-TRANSFERRING SEMI-DETACHED BINARY.ASTRONOMICAL JOURNAL,150(6).
MLA Qian SB,et al."LUT REVEALS A NEW MASS-TRANSFERRING SEMI-DETACHED BINARY".ASTRONOMICAL JOURNAL 150.6(2015).
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