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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
Source PublicationProceedings of Science- 3rd Golden Age of Cataclysmic Variables and Related Objects, Golden 2015
2015
Volume255
Pages1-13
DOI10.22323/1.255.0028
Contribution Rank第1完成单位
Indexed ByEI
Conference Name3rd Conference on Golden Age of Cataclysmic Variables and Related Objects, Golden 2015
Conference Date2015-09-07
Conference PlacePalermo, Italy
Abstract

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.

Funding ProjectK. 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
Funding OrganizationK. 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
Language英语
Subject Area星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeConference article (CA)
PublisherSissa Medialab Srl
ISSNE-ISSN: 18248039
URL查看原文
EI Accession Number20180504691198
EI KeywordsOrbits
EI Classification Number655.2satellites - 716.1information Theory And Signal Processing - 921.6numerical Methods
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12188
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 AuthorDai ZB(戴智斌)
Affiliation1.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
Recommended Citation
GB/T 7714
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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