A New IW And-type Star: Karachurin 12 with Tilted Disks and Diverse Cycles

doi:10.3847/1538-4357/ad8446

YNAO OpenIR > 双星与变星研究组

	A New IW And-type Star: Karachurin 12 with Tilted Disks and Diverse Cycles
	Sun, Qi-Bin 1,2; Qian, Sheng-Bang 1,2; Zhu LY(朱俐颖)3,4 ; Li, Qin-Mei 1,5; Li FX(李福兴)1,3 ; Li MY(李敏榆)3,4 ; Li P(李平)3,4
发表期刊	ASTROPHYSICAL JOURNAL
	2024-11-01
卷号	976 期号:1
DOI	10.3847/1538-4357/ad8446
产权排序	第3完成单位
收录类别	SCI
摘要	The IW And-type phenomenon in cataclysmic variables presents a significant challenge to the accretion disk instability model. Using photometric data from the All-Sky Automated Survey for Supernovae, the Zwicky Transient Facility, and the Transiting Exoplanet Survey Satellite, we identify Karachurin 12 as a new noneclipsing IW And-type object with a cycle period of 35.69(3) days. We also report for the first time that Karachurin 12 is a negative superhump (NSH) system featuring precessing tilted disks, with precession, orbital, and NSH periods of 4.9588(2) days, 0.3168895(13) days, and 0.2979861(8) days, respectively. Our analysis, using dips as the index and NSHs as the probe, reveals diverse cycle patterns in Karachurin 12, with NSH amplitude varying throughout the cycle. These findings offer new insights for studying tilted disks and the IW And-type phenomenon. The mass-transfer burst model has difficulty explaining the observed variations in NSH amplitude, especially given the uncertainty surrounding the origin of the mass-transfer burst. Meanwhile, the tilted thermally unstable disk model indicates a possible connection to the IW And-type phenomenon, but it also struggles to account for the detailed variations in Karachurin 12. Therefore, a wider range of factors must be considered to fully understand the complex changes in Karachurin 12.
资助项目	MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2022YFE0116800]; National Key R&D Program of China[11933008]; National Natural Science Foundation of China
项目资助者	MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2022YFE0116800] ; National Key R&D Program of China[11933008] ; National Natural Science Foundation of China
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:001355371500001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	QUASI-PERIODIC OSCILLATIONS ; X-RAY OBSERVATIONS ; SU UMA STARS ; CATACLYSMIC VARIABLES ; NEGATIVE SUPERHUMPS ; ACCRETION DISK ; INSTABILITY MODEL ; DWARF NOVAE ; SPH SIMULATIONS ; V344 LYRAE
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/114a53/27684
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. A New IW And-type Star: Karachurin 12 with Tilted Disks and Diverse Cycles[J]. ASTROPHYSICAL JOURNAL,2024,976(1).
APA	Sun, Qi-Bin.,Qian, Sheng-Bang.,朱俐颖.,Li, Qin-Mei.,李福兴.,...&李平.(2024).A New IW And-type Star: Karachurin 12 with Tilted Disks and Diverse Cycles.ASTROPHYSICAL JOURNAL,976(1).
MLA	Sun, Qi-Bin,et al."A New IW And-type Star: Karachurin 12 with Tilted Disks and Diverse Cycles".ASTROPHYSICAL JOURNAL 976.1(2024).

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