Orbital Modulation Induced by a Third Component in the Overcontact Binary V0554 Dra
文献类型：期刊论文
| 作者 | Deng, Mu-Lan7,8,9; Zhao, Jia-Xin7,8,9; Wei, Jie7,8,9; Liu, Yi-Man3; Li, Chao-Yue2,6; Zheng, Jie1; Huang, Kai5,8,9; Cao, Lin4; Qing, Hai-yin5,9; Zhang, Yu7,8,9 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-01-20 |
| 卷号 | 997期号:1页码:39 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae200c |
| 产权排序 | 5 |
| 英文摘要 | We present the first comprehensive photometric and spectroscopic analysis of the overcontact eclipsing binary V0554 Dra. By simultaneously modeling multiband light curves and radial velocity data using the Wilson-Devinney code, we determine that the system is a W-subtype contact binary with a mass ratio of 3.61 +/- 0.01 and a shallow contact degree of 18% +/- 2%. The light curves exhibit notable asymmetries near phase 0.5, which are well modeled by introducing a hot spot and a cool spot on the secondary component. The hot spot, located near the inner Lagrangian point, suggests the presence of mass transfer from the less massive primary to the more massive secondary. A detailed (O - C) analysis based on 3753 times of light minima reveals a long-term orbital period decrease at a rate of dP/dt = -4.22 x 10-7 days yr-1, superimposed with a 1.72 yr cyclic variation. Although mass is transferring from the less massive primary to the more massive secondary, which would typically lead to an increase in the orbital period under conservative conditions, the observed secular decrease suggests that angular momentum loss is the dominant driver of the system's evolution. Morphological analysis of the Transiting Exoplanet Survey Satellite light curves over a 5.4 yr baseline rules out magnetic activity as the cause of the cyclic variation, supporting the light-travel time effect (LTTE) due to a tertiary component. Assuming LTTE, we estimate the minimum mass of the third body to be 0.68 M circle dot, with a projected separation of 2.15 au from the binary. Taken together, our findings strongly support the presence of a dynamically significant tertiary companion and reveal V0554 Dra as an exceptionally promising system for studying evolution induced by a third component and potential merger pathways in contact binaries. |
| WOS关键词 | CONTACT BINARIES ; MASS-RATIO ; ADDITIONAL COMPONENTS ; LIGHT CURVES ; STAR LIGHT ; PERIOD MODULATION ; EVOLUTION ; EFFICIENCY ; STABILITY ; ALGORITHM |
| 资助项目 | College Students' Innovation and Entrepreneurship Training Program[S202410649206] ; College Students' Innovation and Entrepreneurship Training Program[202510649053] ; Sichuan Science and Technology Program[2025ZNSFSC0315] ; Key Laboratory of Detection and Application of Space Effect in Southwest Sichuan at Leshan Normal University, Education Department of Sichuan Province[ZDXM202401002] ; National Astronomical Observatories, Chinese Academy of Sciences |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001660938200001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | College Students' Innovation and Entrepreneurship Training Program ; Sichuan Science and Technology Program ; Key Laboratory of Detection and Application of Space Effect in Southwest Sichuan at Leshan Normal University, Education Department of Sichuan Province ; National Astronomical Observatories, Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8468]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Jiang, Lin-Qiao |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Opt Astron, Natl Astron Observ, Beijing, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China 4.Leshan Normal Univ, Sch Foreign Languages, Leshan 614000, Peoples R China 5.Leshan Normal Univ, Leshan 614000, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Leshan Normal Univ, Coll Phys & Optoelect Engn, Leshan 614000, Peoples R China 8.Leshan Normal Univ, Ctr Appl Opt Res, Leshan 614000, Peoples R China 9.Key Lab Detect & Applicat Space Effect Southwest S, Leshan 614000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Mu-Lan,Zhao, Jia-Xin,Wei, Jie,et al. Orbital Modulation Induced by a Third Component in the Overcontact Binary V0554 Dra[J]. ASTROPHYSICAL JOURNAL,2026,997(1):39. |
| APA | Deng, Mu-Lan.,Zhao, Jia-Xin.,Wei, Jie.,Liu, Yi-Man.,Li, Chao-Yue.,...&Jiang, Lin-Qiao.(2026).Orbital Modulation Induced by a Third Component in the Overcontact Binary V0554 Dra.ASTROPHYSICAL JOURNAL,997(1),39. |
| MLA | Deng, Mu-Lan,et al."Orbital Modulation Induced by a Third Component in the Overcontact Binary V0554 Dra".ASTROPHYSICAL JOURNAL 997.1(2026):39. |
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