Long Photometric Cycles in Double-periodic Variables from Nodal Precession of a Tilted Accretion Disk
文献类型：期刊论文
| 作者 | Jiao CL(焦承亮)1,4,5; Zhao EG(赵二刚)1,4; Zhu LY(朱俐颖)1,3,4; Matekov, Azizbek2,3,4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-03-20 |
| 卷号 | 1000期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae4b30 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | We investigate whether the long photometric cycles observed in double-periodic variables (DPVs) can arise from nodal precession of a tilted accretion disk driven by the tidal torque of the companion. Within a simple analytical framework, we derive testable relations linking the long-to-orbital period ratio to the binary mass ratio, the normalized disk size, and the disk tilt angle beta, which itself can be inferred from the long-cycle amplitude, orbital inclination i, and disk luminosity fraction. The model naturally reproduces the two observed long-cycle light-curve morphologies-sinusoidal and double hump-distinguished by the geometric criterion i + beta <= 90 degrees versus i + beta > 90 degrees. Applying these relations to a sample of DPVs, we find that the inferred disk sizes are physically reasonable and consistent with independent light-curve modeling for a nonnegligible subset of systems. Our results show that tidal nodal precession represents a viable and potentially important contributor to the long-period variability of DPVs and provide a quantitative framework for future observational and theoretical studies. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | HD 170582 ; BINARY ; PARAMETERS ; STELLAR ; MODEL ; SPECTROSCOPY ; VARIABILITY ; STARS |
| 资助项目 | (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Yunnan Province (Yunnan Natural Science Foundation)[202401AS070046]; Bureau of International Cooperation, Chinese Academy of Sciences[020GJHZ2023030GC] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001717971000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Yunnan Province (Yunnan Natural Science Foundation)[202401AS070046] ; Bureau of International Cooperation, Chinese Academy of Sciences[020GJHZ2023030GC] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29063]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 通讯作者 | Jiao CL(焦承亮) |
| 作者单位 | 1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China; 2.Ulugh Beg Astronomical Institute, Uzbekistan Academy of Sciences, 33 Astronomicheskaya str., Tashkent, 100052, Uzbekistan 3.University of Chinese Academy of Sciences, No. 1 Yanqihu East Road, Huairou District, 101408, Beijing, People’s Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China; jiaocl@ynao.ac.cn, zergang@ynao.ac.cn; 5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Jiao CL,Zhao EG,Zhu LY,et al. Long Photometric Cycles in Double-periodic Variables from Nodal Precession of a Tilted Accretion Disk[J]. ASTROPHYSICAL JOURNAL,2026,1000(1). |
| APA | 焦承亮,赵二刚,朱俐颖,&Matekov, Azizbek.(2026).Long Photometric Cycles in Double-periodic Variables from Nodal Precession of a Tilted Accretion Disk.ASTROPHYSICAL JOURNAL,1000(1). |
| MLA | 焦承亮,et al."Long Photometric Cycles in Double-periodic Variables from Nodal Precession of a Tilted Accretion Disk".ASTROPHYSICAL JOURNAL 1000.1(2026). |
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来源：云南天文台
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