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Twenty-three new Heartbeat Star systems discovered based on TESS data

文献类型：期刊论文

作者Li MY(李敏榆)1; Qian, Sheng-Bang4,5; Zhou, Ai-Ying3; Zhu LY(朱俐颖)1,2; Liao WP(廖文萍)1,2; Zhao EG(赵二刚)1; Shi XD(施相东)1; Li FX(李福兴)1; Sun, Qi-Bin4,5
刊名Monthly Notices of the Royal Astronomical Society
出版日期2024-10-01
卷号534期号:1页码:281-289
关键词inaries: general stars: variables: general
ISSN号0035-8711
DOI10.1093/mnras/stae2057
产权排序第1完成单位
文献子类Journal article (JA)
英文摘要Heartbeat stars (HBSs) are ideal astrophysical laboratories to study the formation and evolution of binary stars in eccentric orbits and the internal structural changes of their components under strong tidal action. We discover 23 new HBSs based on TESS photometric data. The orbital parameters, including orbital period, eccentricity, orbital inclination, argument of periastron, and epoch of periastron passage of these HBSs, are derived by using a corrected version of Kumar et al.'s model based on the Markov Chain Monte Carlo (MCMC) method. The preliminary results show that these HBSs have orbital periods in the range from 2.7 to 20 d and eccentricities in the range from 0.08 to 0.70. The eccentricity-period relation of these objects shows a positive correlation between eccentricity and period and also shows the existence of orbital circularization. The Hertzsprung-Russell diagram shows that the HBSs are not all located in a particular area. The distribution of the derived parameters suggests a selection bias within the TESS survey towards HBSs with shorter periods. These objects are a very useful source to study the structure and evolution of eccentricity orbit binaries and to extend the TESS HBS catalog. © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
学科主题天文学
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资助项目N/A
语种英语
资助机构N/A
源URL[http://ir.ynao.ac.cn/handle/114a53/27623]  
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.University of Chinese Academy of Sciences, No.1 Yanqihu East Road, Huairou District, Beijing, 101408, China
3.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing, 100101, China;
4.Key Laboratory of Astroparticle Physics of Yunnan Province, 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,Zhou, Ai-Ying,et al. Twenty-three new Heartbeat Star systems discovered based on TESS data[J]. Monthly Notices of the Royal Astronomical Society,2024,534(1):281-289.
APA 李敏榆.,Qian, Sheng-Bang.,Zhou, Ai-Ying.,朱俐颖.,廖文萍.,...&Sun, Qi-Bin.(2024).Twenty-three new Heartbeat Star systems discovered based on TESS data.Monthly Notices of the Royal Astronomical Society,534(1),281-289.
MLA 李敏榆,et al."Twenty-three new Heartbeat Star systems discovered based on TESS data".Monthly Notices of the Royal Astronomical Society 534.1(2024):281-289.

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来源：云南天文台

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