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Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars
Li MY(李敏榆)1,2,3,4; Qian, Sheng-Bang2,3; Zhu LY(朱俐颖)1,4; Guo, Zhao5; Liao WP(廖文萍)1,4; Zhao EG(赵二刚)1,4; Shi XD(施相东)1,4; Li FX(李福兴)1,4; Sun QB(孙起斌)1,4
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2024-04-05
卷号530期号:1页码:586-596
DOI10.1093/mnras/stae885
产权排序第1完成单位
收录类别SCI ; EI
关键词binary stars (154) elliptical orbits (457) stellar oscillations (1617) pulsating variable stars (1307)
摘要Tidally excited oscillations (TEOs) in Heartbeat Stars (HBSs) are an essential probe of the internal properties of the systems, but their potential has yet to be fully exploited. Based on the orbital parameters of TEO candidates from our previous works, we identify the pulsation phases and amplitudes of TEOs in 14 Kepler HBSs. Most pulsation phases of most systems can be explained by the dominant being l = 2, m = 0, or +/- 2 spherical harmonic, assuming that the spin and orbital axes are aligned, and the pulsations are adiabatic and standing waves. The largest deviation (>6 sigma) occurs in KIC 8459354, which can be explained by the spin-orbit misalignment, and KIC 5877364 has a similar scenario. For KIC 11122789, almost half of the harmonics show large deviations; we cautiously suggest that these harmonics may not be considered TEO candidates. A similar scenario also exists in KIC 6290740. This phases and mode identification approach can also be used inversely to verify the TEO candidates derived by the Fourier analysis. Furthermore, the harmonics with large deviations (>2 sigma) in KIC 4377638, KIC 5090937, and KIC 11403032 can be expected to be travelling waves rather than standing waves. In addition, we also suggest that the apsidal motion could cause large deviations in TEO phases from theoretical values.
资助项目National Natural Science Foundation of China[2022YFE0127300]; International Cooperation Projects of the National Key RD Program[11933008]; International Cooperation Projects of the National Key RD Program[12103084]; National Natural Science Foundation of China[202201AT070092]; National Natural Science Foundation of China[202301AT070352]; Basic Research Project of Yunnan Province[202401AS070046]; Science Foundation of Yunnan Province; Yunnan Revitalization Talent Support Program - NASA Science Mission Directorate
项目资助者National Natural Science Foundation of China[2022YFE0127300] ; International Cooperation Projects of the National Key RD Program[11933008, 12103084] ; National Natural Science Foundation of China[202201AT070092, 202301AT070352] ; Basic Research Project of Yunnan Province[202401AS070046] ; Science Foundation of Yunnan Province ; Yunnan Revitalization Talent Support Program - 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
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:001198850500016
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BINARIES ; TIDE
EI入藏号20241615927100
EI主题词Stars
EI分类号657.2 Extraterrestrial Physics and Stellar Phenomena - 921 Mathematics - 921.3 Mathematical Transformations - 921.6 Numerical Methods - 931.1 Mechanics
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/27101
专题双星与变星研究组
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
2.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, China;
3.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China;
4.University of Chinese Academy of Sciences, No.1 Yanqihu East Road, Huairou District, Beijing 101408, China;
5.Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, UK
第一作者单位中国科学院云南天文台
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GB/T 7714
Li MY,Qian, Sheng-Bang,Zhu LY,et al. Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,530(1):586-596.
APA 李敏榆.,Qian, Sheng-Bang.,朱俐颖.,Guo, Zhao.,廖文萍.,...&孙起斌.(2024).Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,530(1),586-596.
MLA 李敏榆,et al."Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 530.1(2024):586-596.
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