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QZ Aurigae: An eclipsing cataclysmic variable with a white dwarf of almost equivalent mass to its companion
Shi G(时光)1,2,3; Qian SB(钱声帮)1,2,3; Shi, G (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2014-04
卷号66期号:2页码:1-4
DOI10.1093/pasj/psu004
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Novae: Cataclysmic Variables Stars: Individual (Qz Aurigae)
摘要We present CCD photometric monitoring of the classic nova QZ Aurigae (Nova Aur 1964) since 2008 with the 2.4-m telescope at Lijiang station of Yunnan Astronomical Observatory in China, as well as the 2.16-m telescope and the 85-cm telescope at Xionglong station of the National Astronomical Observatory in China. By utilizing eight new eclipse timings and the data from the last literature, published almost 20 years ago, we construct the O - C diagram of this system to analyze the orbital period variation. We find no evidence of long-term orbital period variations in QZ Aur. Moreover, the light curves showing the main eclipse process of the white dwarf suggest the presence of a bright spot component and a disk, as commonly found in nova-like variables. This may reveal high mass accretion and high mass transfer in this system. However, even high mass transfer rates from the donor are inconsistent with our result of no period variations, unless the mass ratio is almost equal to 1. Hence, the observed results here possibly support that the mass of the primary white dwarf is extremely close to that of the donor star in the eclipsing binary QZ Aur.
项目资助者Chinese Natural Science Foundation [11103074]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2014-06-09
WOS记录号WOS:000339427200005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MAGNETIC BRAKING ; AC-CANCRI
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被引频次:1[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/114a53/5903
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Shi, G (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, P. O. Box 110, 650011 Kunming, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China
3.University of the Chinese Academy of Sciences, Beijing 100049, China
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Shi G,Qian SB,Shi, G . QZ Aurigae: An eclipsing cataclysmic variable with a white dwarf of almost equivalent mass to its companion[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2014,66(2):1-4.
APA Shi G,Qian SB,&Shi, G .(2014).QZ Aurigae: An eclipsing cataclysmic variable with a white dwarf of almost equivalent mass to its companion.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,66(2),1-4.
MLA Shi G,et al."QZ Aurigae: An eclipsing cataclysmic variable with a white dwarf of almost equivalent mass to its companion".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 66.2(2014):1-4.
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