| A New Window for Studying Intermediate Polars and Tilted Accretion Disk Precession | |
Sun QB(孙起斌)1,2,3,4,5 ; Qian, Sheng-Bang2,3; Zhu LY(朱俐颖)1,4,5; Liao WP(廖文萍)1,4,5; Zhao EG(赵二刚)1,4; Li FX(李福兴)1,4; Shi XD(施相东)1,4; Li MY(李敏榆)1,4,5
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2024-05-01 | |
| 卷号 | 966期号:1 |
| DOI | 10.3847/1538-4357/ad2fc2 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 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. |
| 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] |
| 项目资助者 | National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China[11933008, 12103084, 12303040] ; Basic research project of Yunnan Province[202301AT070352] |
| 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:001208553000001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | QUASI-PERIODIC OSCILLATIONS ; TV-COLUMBAE ; NUMERICAL SIMULATIONS ; CATACLYSMIC BINARIES ; NEGATIVE SUPERHUMPS ; INSTABILITY MODEL ; DWARF NOVAE ; 2A 0526-328 ; VARIABLES ; OUTBURSTS |
| 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/114a53/27148 |
| 专题 | 双星与变星研究组 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 2.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China; [email protected]; 3.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China; 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China; 5.University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, People's Republic of China |
| 第一作者单位 | 中国科学院云南天文台 |
| 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). |
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