| KIC 7914906: An eclipsing heartbeat star with tidally excited oscillations and gamma Doradus/delta Scuti hybrid pulsations | |
Li MY(李敏榆)1,2 ; Qian, Sheng-Bang3,4; Zhu LY(朱俐颖)1,2; Liu L(刘亮)1,2; Liao WP(廖文萍)1,2; Zhao EG(赵二刚)1,2; Shi XD(施相东)1,2; Li FX(李福兴)1,2; Sun, Qi-Bin3,4
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| 发表期刊 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 2024 | |
| DOI | 10.1093/pasj/psae103 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | binaries: eclipsing methods: data analysis stars: oscillations |
| 摘要 | We present the eclipsing heartbeat star KIC 9704906 with tidally excited oscillations (TEOs) and gamma Doradus/delta Scuti hybrid pulsations. The derived parameters show that it has an orbital period of P=8.7529108(1) d, a high eccentricity of e=0.467(3), and a high inclination of i=78.degrees 81(6). The mass ratio q=0.981(5) and relative radii (radius divided by the semi major axis) r(1) = 0.0369(2) and r(2)=0.0715(4) indicate that the secondary component has a smaller mass and a larger radius, and may have evolved off the main sequence. The eight derived TEO candidates, n=3, 4, 5, 6, 7, 12, 40, and 44 harmonics, are consistent with or close to the dominant spherical harmonic harmonic l=2, m=0, or +/- 2, assuming that the spin and orbital axes are aligned, and the pulsations are adiabatic and standing waves. We also identify eight independent frequency candidates, but one of them, f(7), is more like a modulation of a quasi-periodic signal and the orbits. According to the g-mode frequencies, we find that the rotation period of one component is 11.52(29) d. Although the masses and radii cannot be further constrained due to the lack of sufficient high-precision spectra, fascinating phenomena in the Fourier spectra are evident and valuable in this system. |
| 资助项目 | National Natural Science Foundation of China[2022YFE0127300]; Basic Research Project of Yunnan Province[11933008]; Basic Research Project of Yunnan Province[12103084]; Science Foundation of Yunnan Province[202201AT070092]; Science Foundation of Yunnan Province[202301AT070352]; Yunnan Revitalization Talent Support Program[202401AS070046]; NASA Science Mission directorate |
| 项目资助者 | National Natural Science Foundation of China[2022YFE0127300] ; Basic Research Project of Yunnan Province[11933008, 12103084] ; Science Foundation of Yunnan Province[202201AT070092, 202301AT070352] ; Yunnan Revitalization Talent Support Program[202401AS070046] ; NASA Science Mission directorate |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article; Early Access |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 0004-6264 |
| URL | 查看原文 |
| WOS记录号 | WOS:001374766600001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | DELTA-SCUTI ; STELLAR PULSATIONS ; EXTREME AMPLITUDE ; BINARY-SYSTEM ; SCT ; CONVECTION ; EXCITATION ; CATALOG ; MODES ; TIDE |
| 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/114a53/27854 |
| 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.University of Chinese Academy of Sciences, No. 1 Yanqihu East Road, Huairou District, Beijing 101408, People’s Republic of China; 3.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People’s Republic of China; 4.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, 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 | Li MY,Qian, Sheng-Bang,Zhu LY,et al. KIC 7914906: An eclipsing heartbeat star with tidally excited oscillations and gamma Doradus/delta Scuti hybrid pulsations[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2024. |
| APA | 李敏榆.,Qian, Sheng-Bang.,朱俐颖.,刘亮.,廖文萍.,...&Sun, Qi-Bin.(2024).KIC 7914906: An eclipsing heartbeat star with tidally excited oscillations and gamma Doradus/delta Scuti hybrid pulsations.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN. |
| MLA | 李敏榆,et al."KIC 7914906: An eclipsing heartbeat star with tidally excited oscillations and gamma Doradus/delta Scuti hybrid pulsations".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2024). |
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| KIC 7914906_ An ecli（1697KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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