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CATACLYSMIC VARIABLES OBSERVED DURING K2 CAMPAIGNS 0 AND 1
Dai ZB(戴智斌)1,4; Szkody, Paula2; Garnavich, Peter M.3; Kennedy, Mark3,5
Source PublicationASTRONOMICAL JOURNAL
2016-07-01
Volume152Issue:1
DOI10.3847/0004-6256/152/1/5
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Novae, Cataclysmic Variables White Dwarfs
Abstract

There are 15 cataclysmic variables (CVs) observed in the first two campaigns of the K2 mission. In this paper, the eight CVs showing distinct features are analyzed in detail. Among these eight, modulations during quiescence are evident at the known orbital periods in the SU UMa stars QZ Vir and RZ Leo, and at our newly determined orbital periods for 1RXS J0632+2536 and WD1144+011. The periodogram analysis for the quiescent light curve of QZ Vir reveals multi-period modulations and the coexistence of orbital and superhump periods. The phased orbital light curves for the other three CVs in quiescence display wide (about half cycle) and shallow (<0.5 mag) eclipse features. Besides these modulations, their quiescent light curves reveal several transient events: a sudden decrease of system light in 1RXS J0632+2536, a low-level flare-like event in QZ Vir, a short brightening event in RZ Leo, and a temporary disappearance of the orbital modulation in WD1144+011. The two known dwarf novae UV Gem and TW Vir and the CVs USNO-B1.01144-00115322 and CSS 130516: 111236:111236.7+002807 show outbursts, including one complete and three incomplete normal outbursts and two complete superoutbursts. An incomplete but typical normal outburst confirms the dwarf nova identification of the USNO-B1.01144-00115322. The one complete normal outburst in UV Gem may provide the orbital period, since its modulations are shorter than the previously observed superhump period. The superoutburst of CSS 130516: 111236.7+002807, along with the corresponding superhump period, indicates that this object is an SU UMa star. The derived superhump period of CSS 130516: 111236:111236.7+002807 is 1.44 hr, implying that this new SU UMa star is close to the period minimum.

Funding ProjectCAS "Light of West China" Program ; Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Chinese Academy of Sciences ; NSF[AST-1514737] ; Naughton Foundation ; UCC Strategic Research Fund
Funding OrganizationCAS "Light of West China" Program ; Chinese Natural Science Foundation[11133007, 11325315] ; Chinese Academy of Sciences ; NSF[AST-1514737] ; Naughton Foundation ; UCC Strategic Research Fund
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000380956000005
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBright Qso Survey ; Su Uma Stars ; T-leonis ; Dwarf Novae ; Kepler Field ; Rz Leonis ; V1504 Cygni ; Mass-radius ; Light-curve ; V344 Lyrae
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9684
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, 650011, Kunming, P. R. China
2.University of Washington, Seattle, WA 98195, USA
3.University of Notre Dame, Notre Dame, IN 46556, USA
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. R. China.
5.Department of Physics, University College Cork, Cork, Ireland.
Recommended Citation
GB/T 7714
Dai ZB,Szkody, Paula,Garnavich, Peter M.,et al. CATACLYSMIC VARIABLES OBSERVED DURING K2 CAMPAIGNS 0 AND 1[J]. ASTRONOMICAL JOURNAL,2016,152(1).
APA Dai ZB,Szkody, Paula,Garnavich, Peter M.,&Kennedy, Mark.(2016).CATACLYSMIC VARIABLES OBSERVED DURING K2 CAMPAIGNS 0 AND 1.ASTRONOMICAL JOURNAL,152(1).
MLA Dai ZB,et al."CATACLYSMIC VARIABLES OBSERVED DURING K2 CAMPAIGNS 0 AND 1".ASTRONOMICAL JOURNAL 152.1(2016).
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