A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession

doi:10.3847/1538-4357/ad2fc2

	A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession
	Sun QB(孙起斌)1,2,3,4,5; Qian, Sheng-Bang 3,4; Zhu LY(朱俐颖)1,2,5; Liao WP(廖文萍)1,2,5; Zhao EG(赵二刚)2,5; Li FX(李福兴)2,5; Shi XD(施相东)2,5; Li MY(李敏榆)1,2,5
刊名	ASTROPHYSICAL JOURNAL
	2024-05-01
卷号	966 期号:1
ISSN号	0004-637X
DOI	10.3847/1538-4357/ad2fc2
产权排序	第1完成单位
文献子类	Article
英文摘要	TV Col is a long-period eclipsing intermediate polar (IP) prototype star for the negative superhump (NSH) system. We investigate the eclipse minima, eclipse depth, and NSH amplitude based on TESS photometry. Using the same analytical method as for SDSS J081256.85+191157.8, we find periodic variations of O - C for eclipse minima and NSH amplitudes with periods of 3.939(25) days and 3.907(30) days, respectively. The periodic variation of the NSH amplitude of TV Col confirms that periodic changes in NSH amplitude in response to the tilted disk precession may be universal, which is further evidence that the origin of the NSHs is related to the tilted disk precession. We suggest that the variation in NSH amplitude may be similar to the superorbital signal, coming from the periodic change in visual brightness of the energy released by streams touching the tilted disk with tilted disk precession. Finally, we find for the first time that the eclipse depth exhibits biperiodic variations with periods of P 1 = 3.905(11) days and P 2 = 1.953(4) days, respectively. P 2 is about half of P 1 and the disk precession period (P 1 approximate to P prec approximate to 2 x P 2). We suggest that P 1 may come from the periodic change in the brightness of the eclipse center due to tilted disk precession, while P 2 may come from two accretion curtains precessing together with the tilted disk, but more verification and discussion are necessary. The discovery of biperiodic variations in eclipse depth provides a new window for studying IPs and tilted disk precession.
学科主题	天文学 ; 恒星与银河系
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	National Key R&D Program of China[2022YFE0116800]; National Natural Science Foundation of China[11933008]; National Natural Science Foundation of China[12103084]; National Natural Science Foundation of China[12303040]; Basic research project of Yunnan Province[202301AT070352]
WOS关键词	QUASI-PERIODIC OSCILLATIONS ; TV-COLUMBAE ; NUMERICAL SIMULATIONS ; CATACLYSMIC BINARIES ; NEGATIVE SUPERHUMPS ; INSTABILITY MODEL ; DWARF NOVAE ; 2A 0526-328 ; VARIABLES ; OUTBURSTS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001208553000001
资助机构	National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China[11933008, 12103084, 12303040] ; Basic research project of Yunnan Province[202301AT070352]
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/27148]
专题	云南天文台_双星与变星研究组
作者单位	1.University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, People's Republic of China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China; 3.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 4.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China; qsb@ynao.ac.cn; 5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
推荐引用方式 GB/T 7714	Sun QB,Qian, Sheng-Bang,Zhu LY,et al. A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession[J]. ASTROPHYSICAL JOURNAL,2024,966(1).
APA	孙起斌.,Qian, Sheng-Bang.,朱俐颖.,廖文萍.,赵二刚.,...&李敏榆.(2024).A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession.ASTROPHYSICAL JOURNAL,966(1).
MLA	孙起斌,et al."A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession".ASTROPHYSICAL JOURNAL 966.1(2024).