Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars

doi:10.1093/mnras/stae885

	Pulsation phases and mode identification of tidally excited oscillations in fourteen Kepler Heartbeat Stars
	Li MY(李敏榆)1,3,4,5; Qian, Sheng-Bang 4,5; Zhu LY(朱俐颖)1,3; Guo, Zhao 2; Liao WP(廖文萍)1,3; Zhao EG(赵二刚)1,3; Shi XD(施相东)1,3; Li FX(李福兴)1,3; Sun QB(孙起斌)1,3
刊名	Monthly Notices of the Royal Astronomical Society
	2024-05-01
卷号	530 期号:1 页码:586-596
关键词	binary stars (154) elliptical orbits (457) stellar oscillations (1617) pulsating variable stars (1307)
ISSN号	0035-8711
DOI	10.1093/mnras/stae885
产权排序	第1完成单位
文献子类	Journal article (JA)
英文摘要	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 σ) 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 σ) 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. © 2024 The Author(s).
学科主题	天文学 ; 恒星与银河系
URL标识	查看原文
资助项目	N/A
语种	英语
资助机构	N/A
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/27101]
专题	云南天文台_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 Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, United Kingdom 3.University of Chinese Academy of Sciences, No.1 Yanqihu East Road, Huairou District, Beijing, 101408, China; 4.Key Laboratory of Astroparticle Physics of Yunnan Pro vince, Yunnan University, Kunming, 650091, China; 5.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming, 650091, China;
推荐引用方式 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.