Evidence for a Close-in Tertiary Orbiting around the Algol-type System HZ Dra with Tidal Splitting and Spots Activities
文献类型：期刊论文
| 作者 | Li P(李平)1,5 ; Liao WP(廖文萍)1,5; Qian, Sheng-Bang2,4; Li LJ(李临甲)5; Sun QB(孙起斌)1,5; Shi XD(施相东)5; Matekov, Azizbek1,5; Ceng QH(曾崎环)1,5; Deng ZL(邓兆龙)1,5; Fang, Xiao-Hui3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2024-12-01 |
| 卷号 | 977期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad8bc4 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | We report a cyclic variation of the O - C diagram with a semiamplitude of 0.0033 days and a period of 1.05 yr for the pulsating eclipsing binary HZ Dra. The cyclic variation can be explained by the light travel-time effect via the presence of a close-in third body orbiting around HZ Dra in an elliptical orbit with a maximum semimajor axis of 0.89 au. Based on the Wilson-Devinney code, the contribution of the third light to the total system is determined to be 29.0%, which is in agreement with the estimated value. Our light-curve modeling indicates an evolving hot and cool spot on the surface of the primary and secondary components, respectively. Their positions are roughly symmetrical to the inner Lagrangian point L1, which could be used to explain the variation in the O'Connell effect. Our frequency analysis detects one radial p-mode, seven nonradial p-modes, and one nonradial g-mode. In addition, a total of six multiplets are identified, spaced by the orbital frequency, which can be explained as a tidally split mode caused by the equilibrium tides of the close binary system with a circular orbit. These pulsating features suggest that the primary of HZ Dra is a delta Scuti star, pulsating in both p- and g-mode and influenced by tidal forces. |
| 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 | BINARY STAR LIGHT ; ISENTROPIC OSCILLATIONS ; ECLIPSING BINARIES ; PULSATION ; COMPONENTS ; PERTURBATIONS ; PARAMETERS ; TELESCOPE ; FREQUENCY ; CURVES |
| 资助项目 | The International Cooperation Projects of the National Key RD Program; National Natural Science Foundation of China; The 2022 CAS Light of West China Program, the basic research project of Yunnan Province; Young Talent Project of Yunnan Revitalization Talent Support Program in Yunnan Province[2208085QA23]; International Partnership Program of Chinese Academy of Sciences[020GJHZ2023030GC]; NASA Explorer Program; |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001366985900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | The International Cooperation Projects of the National Key RD Program ; National Natural Science Foundation of China ; The 2022 CAS Light of West China Program, the basic research project of Yunnan Province ; Young Talent Project of Yunnan Revitalization Talent Support Program in Yunnan Province[2208085QA23] ; International Partnership Program of Chinese Academy of Sciences[020GJHZ2023030GC] ; NASA Explorer Program ; [2022YFE0116800] ; [11933008] ; [202201AT070092] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27832]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.University of Chinese Academy of Sciences, No.1 Yanqihu East Rd, Huairou District, Beijing, 101408, People's Republic of China; 2.School of Physics and Astronomy, Yunan University, Kunming 650091, People's Republic of China; 3.School of Mathematics, Physics and Finance, Anhui Polytechnic University, Wuhu 241000, People's Republic of China 4.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, 650091 Kunming, People's Republic of China; 5.Yunnan Observatories, Chinese Academy of Sciences (CAS), 650216 Kunming, People's Republic of China; liaowp@ynao.ac.cn; |
| 推荐引用方式 GB/T 7714 | Li P,Liao WP,Qian, Sheng-Bang,et al. Evidence for a Close-in Tertiary Orbiting around the Algol-type System HZ Dra with Tidal Splitting and Spots Activities[J]. ASTROPHYSICAL JOURNAL,2024,977(1). |
| APA | 李平.,廖文萍.,Qian, Sheng-Bang.,李临甲.,孙起斌.,...&Fang, Xiao-Hui.(2024).Evidence for a Close-in Tertiary Orbiting around the Algol-type System HZ Dra with Tidal Splitting and Spots Activities.ASTROPHYSICAL JOURNAL,977(1). |
| MLA | 李平,et al."Evidence for a Close-in Tertiary Orbiting around the Algol-type System HZ Dra with Tidal Splitting and Spots Activities".ASTROPHYSICAL JOURNAL 977.1(2024). |
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来源：云南天文台
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