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The kepler program for observing interesting CVs
Dai ZB(戴智斌)1,5; Szkody, Paula2; Garnavich, Peter M.3; Kennedy, Mark3,4
会议录名称Proceedings of Science- 3rd Golden Age of Cataclysmic Variables and Related Objects, Golden 2015
2015
卷号255
页码1-13
DOI10.22323/1.255.0028
产权排序第1完成单位
收录类别EI
会议名称3rd Conference on Golden Age of Cataclysmic Variables and Related Objects, Golden 2015
会议日期2015-09-07
会议地点Palermo, Italy
摘要

Kepler K2 space telescope observations of cataclysmic variables (CVs) were used to search for periodic behavior and identify possible pseudo periods due to the satellite artefacts from periodic thrusters. Detailed period analyses were carried out for the dwarf nova UV Gem observed in the long cadence (LC) of the K2 campaign 0 (K2-C0) and seven CVs, comprised of four faint CVs and three known dwarf novae QZ Vir, RZ Leo and TW Vir observed in the long and short cadences (LC and SC) of the K2 campaign 1 (K2-C1), respectively. All 23 signals including harmonics and beat periods were identified from the periodograms of the four faint CVs in K2-C1. Among these 23 periods, there were eight signals distinctly detected from the periodogram of J1125-0016 due to a possible resonance between its orbital period and the common 5.9-hr satellite thruster period. A series of periodic dips with varying profiles obeying a period of 3.9256 day were found in all three SC light curves of K2-C1, which were extracted from the original K2 data files. This period is due to a periodic short-timescale resetting of the thruster. A two-dimensional power spectrum of the dwarf nova UV Gem observed in K2-C0 with a moving window of 4.7 day was derived for demonstrating the variations of the two significant modulations at the periods of 2.07 hr and 2.12 hr during the outburst and quiescent phases. In addition, the other two newly detected weak but consistent signals at the periods of 1.06hr and 0.91 hr were seen, likely due to the first harmonic of the 2.12 hr period and the fifth harmonic of the 6-hr thruster event of the satellite, respectively.

资助项目K. C. Wong Education Foundation, Hong Kong ; West Light Foundation ; 1-year Visiting Scholar Program of The Chinese Academy of Sciences ; NSF[AST-1514737] ; Naughton Foundation ; UCC Strategic Research Fund
项目资助者K. C. Wong Education Foundation, Hong Kong ; West Light Foundation ; 1-year Visiting Scholar Program of The Chinese Academy of Sciences ; NSF ; Naughton Foundation ; UCC Strategic Research Fund
语种英语
学科领域星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Conference article (CA)
出版者Sissa Medialab Srl
ISSN号E-ISSN: 18248039
URL查看原文
EI入藏号20180504691198
EI主题词Orbits
EI分类号655.2satellites - 716.1information Theory And Signal Processing - 921.6numerical Methods
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12188
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Dai ZB(戴智斌)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P. O. Box 110, Kunming, 650011, China
2.University of Washington, Seattle, WA; 98195, United States
3.University of Notre Dame, Notre Dame, IN, 46556, United States
4.Department of Physics, University College Cork, Cork, Ireland
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, China
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Dai ZB,Szkody, Paula,Garnavich, Peter M.,et al. The kepler program for observing interesting CVs[C]:Sissa Medialab Srl,2015:1-13.
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