A Phenomenological Model for the Light Curve of Three Quiescent Low-inclination Dwarf Novae and One Pre-cataclysmic Variable

doi:10.3847/1538-3881/aadb99

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	A Phenomenological Model for the Light Curve of Three Quiescent Low-inclination Dwarf Novae and One Pre-cataclysmic Variable
	Dai, Zhibin 2,3,4,5,6; Szkody, Paula 1; Kennedy, Mark 7; Su, Jie 2,3,5; Medagangoda, N. Indika 8; Robinson, Edward L.9; Garnavich, Peter M.10; De Silva, L. Malith M.11
刊名	ASTRONOMICAL JOURNAL
	2018-10-01
卷号	156 期号:4 页码:17
关键词	binaries (including multiple): close novae, cataclysmic variables white dwarfs
ISSN号	0004-6256
DOI	10.3847/1538-3881/aadb99
英文摘要	We used the light curve code XRBinary to model the quiescent K2 light curves of three low-inclination cataclysmic variables (CVs): 1RXS J0632+2536 (J0632+2536), RZ Leo, TW Vir and the pre-CV WD 1144+011. Optimized light curve models were obtained using a nonlinear fitting code NMfit and visualized by Phoebe 2.0. The disk model of J0632+2536 shows that one hotspot at the edge of the disk is enough to describe its light curve, while the other two dwarf nova (DN): RZ Leo and TW Vir require two hotspots. A typical pre-CV model with a weak irradiation effect for WD 1144+011 can explain its single-hump modulation and the newly observed spectrum confirms its previous classification. The synthetic analyses for the DN clearly indicate that phase zero of the double-hump modulations occurs around the secondary minimum and the primary hump is mainly caused by the hotspot at the edge of the disk. The quiescent disk has a flat temperature distribution with a power index of -0.11. The disk model of RZ Leo implies a truncated disk, supporting its previously speculated classification as an intermediate polar (IP). Except for the IP model of RZ Leo, which lacks a component related to the inferred accretion curtain, the models of J0632+2536, TW Vir and WD 1144+011 are consistent with results from the Gaia mission. The derived masses and radii of the secondaries of the three DN are consistent with the semi-empirical relations for CV donor stars, while their effective temperatures are higher than the predictions. Irradiation of the donor stars is investigated to explain this discrepancy.
资助项目	CAS Light of West China Program ; Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Science Foundation of Yunnan Province[2016FB007] ; NSF[AST-1514737] ; Royal Society ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
WOS关键词	X-RAY BINARIES ; ACCRETION DISKS ; WHITE-DWARFS ; RZ LEONIS ; BOLOMETRIC CORRECTIONS ; EFFECTIVE TEMPERATURES ; Z-CHAMAELEONTIS ; MASS-RADIUS ; SPACED DATA ; HOT-SPOT
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000444462300004
资助机构	CAS Light of West China Program ; CAS Light of West China Program ; Chinese Natural Science Foundation ; Chinese Natural Science Foundation ; Science Foundation of Yunnan Province ; Science Foundation of Yunnan Province ; NSF ; NSF ; Royal Society ; Royal Society ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; CAS Light of West China Program ; CAS Light of West China Program ; Chinese Natural Science Foundation ; Chinese Natural Science Foundation ; Science Foundation of Yunnan Province ; Science Foundation of Yunnan Province ; NSF ; NSF ; Royal Society ; Royal Society ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; CAS Light of West China Program ; CAS Light of West China Program ; Chinese Natural Science Foundation ; Chinese Natural Science Foundation ; Science Foundation of Yunnan Province ; Science Foundation of Yunnan Province ; NSF ; NSF ; Royal Society ; Royal Society ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; CAS Light of West China Program ; CAS Light of West China Program ; Chinese Natural Science Foundation ; Chinese Natural Science Foundation ; Science Foundation of Yunnan Province ; Science Foundation of Yunnan Province ; NSF ; NSF ; Royal Society ; Royal Society ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22707]
专题	中国科学院国家天文台
通讯作者	Dai, Zhibin
作者单位	1.Univ Washington, Seattle, WA 98195 USA 2.Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China 3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 6.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 7.Univ Manchester, Ctr Astrophys, Sch Phys & Astron, Jodrell Bank, Manchester M13 9PL, Lancs, England 8.Arthur C Clarke Inst Modern Technol, Moratuwa, Sri Lanka 9.Univ Texas Austin, Austin, TX 78712 USA 10.Univ Notre Dame, Notre Dame, IN 46556 USA
推荐引用方式 GB/T 7714	Dai, Zhibin,Szkody, Paula,Kennedy, Mark,et al. A Phenomenological Model for the Light Curve of Three Quiescent Low-inclination Dwarf Novae and One Pre-cataclysmic Variable[J]. ASTRONOMICAL JOURNAL,2018,156(4):17.
APA	Dai, Zhibin.,Szkody, Paula.,Kennedy, Mark.,Su, Jie.,Medagangoda, N. Indika.,...&De Silva, L. Malith M..(2018).A Phenomenological Model for the Light Curve of Three Quiescent Low-inclination Dwarf Novae and One Pre-cataclysmic Variable.ASTRONOMICAL JOURNAL,156(4),17.
MLA	Dai, Zhibin,et al."A Phenomenological Model for the Light Curve of Three Quiescent Low-inclination Dwarf Novae and One Pre-cataclysmic Variable".ASTRONOMICAL JOURNAL 156.4(2018):17.