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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
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2014-04
Volume66Issue:2Pages:1-4
DOI10.1093/pasj/psu004
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Novae: Cataclysmic Variables Stars: Individual (Qz Aurigae)
Abstract

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.

Funding ProjectChinese Natural Science Foundation[11103074]
Funding OrganizationChinese Natural Science Foundation[11103074]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
Archive Date2014-06-09
WOS IDWOS:000339427200005
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC BRAKING ; AC-CANCRI
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5903
Collection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
Corresponding AuthorShi G(时光)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi G,Qian SB. 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.(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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