Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis

doi:10.3847/1538-4357/ad6f05

YNAO OpenIR > 双星与变星研究组

	Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis
	Sun, Qi-Bin 1,2; Qian, Sheng-Bang 1,2; Zhu LY(朱俐颖)3,4 ; Li, Qin-Mei 5; Li MY(李敏榆)3,4 ; Li P(李平)3,4
发表期刊	ASTROPHYSICAL JOURNAL
	2024-10-01
卷号	974 期号:1
DOI	10.3847/1538-4357/ad6f05
产权排序	第3完成单位
收录类别	SCI
摘要	Tilted disk precession exists in different objects. Negative superhumps (NSHs) in cataclysmic variable stars are believed to arise from the interaction between the reverse precession of a tilted disk and the streams from the secondary star. Utilizing Transiting Exoplanet Survey Satellite photometry, we present a comprehensive investigation into the tilted disk precession and NSHs in the dwarf nova (DN) HS 2325+8205, employing eclipse minima, eclipse depths, NSH frequencies, and NSH amplitudes and the correlation between them as the windows. We identified NSHs with a period of 0.185671(17) day in HS 2325+8205. The NSH frequency exhibits variability with a period of 3.943(9) days, akin to the tilted disk precession period validated in nova-like stars (SDSS J0812) and intermediate polars (IPs; TV Col). The O - C of the eclipse minima were similarly found to vary cyclically in a period of 4.135(5) days, characterized by a faster rise than fall. Furthermore, the NSH amplitude exhibits complex and diverse variations, which may be linked to changes in the disk radius, the mass transfer rate, and the apparent area of the hot spot. For the first time in DNe, we observe biperiodic variations in eclipse depth (P 1 = 4.131(4) days and P 2 = 2.065(2) days approximate to P prec/2) resembling those seen in IPs, suggesting that variations with P 2 are not attributable to an accretion curtain, as previously suspected. Moreover, NSH amplitude and eclipse depth decrease with increasing NSH frequency, while NSH amplitude correlates positively with eclipse depth. These complex variations observed across multiple observational windows provide substantial evidence for the understanding of tilted disk precession and NSHs.
资助项目	National Key R&D Program of China[2022YFE0116800]; National Natural Science Foundation of China[11933008]
项目资助者	National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China[11933008]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001329315400001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	QUASI-PERIODIC OSCILLATIONS ; ACCRETION DISCS ; CATACLYSMIC BINARIES ; SPH SIMULATIONS ; LIGHT CURVES ; KIC 9406652 ; JET ; NOVAE ; STARS ; MODEL
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27637
专题	双星与变星研究组
作者单位	1.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China; [email protected]; 2.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 4.University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, People's Republic of China; 5.Department of Physics, College of Physics, Guizhou University, Guiyang, 550025, People's Republic of China
推荐引用方式 GB/T 7714	Sun, Qi-Bin,Qian, Sheng-Bang,Zhu LY,et al. Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis[J]. ASTROPHYSICAL JOURNAL,2024,974(1).
APA	Sun, Qi-Bin,Qian, Sheng-Bang,朱俐颖,Li, Qin-Mei,李敏榆,&李平.(2024).Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis.ASTROPHYSICAL JOURNAL,974(1).
MLA	Sun, Qi-Bin,et al."Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis".ASTROPHYSICAL JOURNAL 974.1(2024).

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