Tilted Disk Precession and Negative Superhumps in HS 2325+8205: A Multiwindow Analysis
文献类型：期刊论文
| 作者 | Sun, Qi-Bin4,5; Qian, Sheng-Bang4,5; Zhu LY(朱俐颖)2,3 ; Li, Qin-Mei1; Li MY(李敏榆)2,3; Li P(李平)2,3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2024-10-01 |
| 卷号 | 974期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad6f05 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 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 |
| WOS关键词 | QUASI-PERIODIC OSCILLATIONS ; ACCRETION DISCS ; CATACLYSMIC BINARIES ; SPH SIMULATIONS ; LIGHT CURVES ; KIC 9406652 ; JET ; NOVAE ; STARS ; MODEL |
| 资助项目 | National Key R&D Program of China[2022YFE0116800]; National Natural Science Foundation of China[11933008] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001329315400001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China[11933008] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27637]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.Department of Physics, College of Physics, Guizhou University, Guiyang, 550025, People's Republic of China 2.University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 4.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 5.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China; qsb@ynao.ac.cn; |
| 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). |
入库方式： OAI收割
来源：云南天文台
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