EL CMi: Confirmation of triaxial pulsation theory
文献类型：期刊论文
| 作者 | Handler, G.11; Rappaport, S. A.10; Jones, D.4,9; Miszuda, A.11; Omohundro, M.3; Jayaraman, R.10; Gagliano, R.1; Fuller, J.14; Kurtz, D. W.12,13; Munday, J.5 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-10-10 |
| 卷号 | 702 |
| 关键词 | binaries: close binaries: eclipsing binaries: spectroscopic stars: evolution stars: oscillations stars: variables: delta Scuti |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202556149 |
| 产权排序 | 第11完成单位 |
| 文献子类 | Article |
| 英文摘要 | Triaxial pulsators are a recently discovered group of oscillating stars in close binary systems that pulsate around three axes at the same time. It has recently been theoretically shown that new types of pulsation modes, the tidally tilted standing (TTS) modes, can arise in these stars. We report the first detection of a quadrupole TTS oscillation mode in the pulsating component of the binary system EL CMi following an analysis of TESS space photometry. Two dipole oscillations around different axes in the orbital plane are present as well. In addition, we characterize the binary system using new radial velocity measurements and PHOEBE as well as simultaneous spectral energy distribution and light curve modeling. The pulsating primary component has properties typical of a delta Scuti star, but has accreted and is still accreting mass from its Roche-lobe filling companion. The donor star is predicted to evolve into a low-mass helium white dwarf. EL CMi demonstrates the potential of asteroseismic inferences of the structure of stars in close binaries before and after mass transfer and in three spatial dimensions. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | BOLOMETRIC CORRECTIONS ; CONVECTIVE BOUNDARIES ; MESA ISOCHRONES ; BINARY ; STARS ; MODULES ; EVOLUTION ; ROTATION ; CATALOG ; ECLIPSE |
| 资助项目 | Polish National Center for Science (NCN)[2021/43/B/ST9/02972]; Agencia Estatal de Investigacion del Ministerio de Ciencia, Innovacion y Universidades (MCIU/AEI); European Regional Development Fund (ERDF)[PID-2022-136653NA-I00]; European Union Next Generation EU/PRTR[CNS2023-143910]; National Key R&D Program of China[2021YFA1600403]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12333008]; National Natural Science Foundation of China[12422305]; NSF grant[AST-2206814]; NASA Science Mission Directorate; NASA[NAS 5-26555] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001591644100020 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Polish National Center for Science (NCN)[2021/43/B/ST9/02972] ; Agencia Estatal de Investigacion del Ministerio de Ciencia, Innovacion y Universidades (MCIU/AEI) ; European Regional Development Fund (ERDF)[PID-2022-136653NA-I00] ; European Union Next Generation EU/PRTR[CNS2023-143910] ; National Key R&D Program of China[2021YFA1600403] ; National Natural Science Foundation of China[12288102, 12333008, 12422305] ; NSF grant[AST-2206814] ; NASA Science Mission Directorate ; NASA[NAS 5-26555] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28655]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Handler, G. |
| 作者单位 | 1.Amateur Astronomer, Glendale, AZ 85308, USA; 2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, PR China; 3.Citizen Scientist, c/o Zooniverse, Dept., of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK; 4.Instituto de Astrofísica de Canarias, 38205 La Laguna, Spain; 5.Department of Physics, Gibbet Hill Road, University of Warwick, Coventry CV4 7AL, UK; 6.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, PR China; 7.NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA; 8.SETI Institute, 189 Bernardo Ave, Suite 200, Mountain View, CA 94043, USA 9.Departamento de Astrofísica, Universidad de la Laguna, 38206 La Laguna, Tenerife, Spain; 10.Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA; |
| 推荐引用方式 GB/T 7714 | Handler, G.,Rappaport, S. A.,Jones, D.,et al. EL CMi: Confirmation of triaxial pulsation theory[J]. ASTRONOMY & ASTROPHYSICS,2025,702. |
| APA | Handler, G..,Rappaport, S. A..,Jones, D..,Miszuda, A..,Omohundro, M..,...&Kostov, V. B..(2025).EL CMi: Confirmation of triaxial pulsation theory.ASTRONOMY & ASTROPHYSICS,702. |
| MLA | Handler, G.,et al."EL CMi: Confirmation of triaxial pulsation theory".ASTRONOMY & ASTROPHYSICS 702(2025). |
入库方式： OAI收割
来源：云南天文台
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