QZ Aurigae: An eclipsing cataclysmic variable with a white dwarf of almost equivalent mass to its companion
文献类型：期刊论文
| 作者 | Shi G(时光)1,2,3 ; Qian SB(钱声帮)1,2,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2014-04 |
| 卷号 | 66期号:2页码:1-4 |
| ISSN号 | 0004-6264 |
| 关键词 | binaries: close binaries: eclipsing novae: cataclysmic variables stars: individual (QZ Aurigae) |
| 通讯作者 | Shi, G (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MAGNETIC BRAKING ; AC-CANCRI |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/66/2/41 |
| 语种 | 英语 |
| WOS记录号 | WOS:000339427200005 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5903]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 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 |
| 推荐引用方式 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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来源：云南天文台
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