Asteroseismology of the Hyades red giant and planet host epsilon Tauri
文献类型：期刊论文
| 作者 | Arentoft, T.1; Grundahl, F.1; White, T. R.1; Slumstrup, D.1; Handberg, R.1; Lund, M. N.1; Brogaard, K.1; Andersen, M. F.1; Aguirre, V. Silva1; Zhang, C.4 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2019-02-18 |
| 卷号 | 622页码:12 |
| ISSN号 | 1432-0746 |
| 关键词 | asteroseismology techniques: radial velocities techniques: photometric stars: individual: HD28305 stars: oscillations planetary systems |
| DOI | 10.1051/0004-6361/201834690 |
| 英文摘要 | Context. Asteroseismic analysis of solar-like stars allows us to determine physical parameters such as stellar mass, with a higher precision compared to most other methods. Even in a well-studied cluster such as the Hyades, the masses of the red giant stars are not well known, and previous mass estimates are based on model calculations (isochrones). The four known red giants in the Hyades are assumed to be clump (core-helium-burning) stars based on their positions in colour-magnitude diagrams, however asteroseismology offers an opportunity to test this assumption. Aims. Using asteroseismic techniques combined with other methods, we aim to derive physical parameters and the evolutionary stage for the planet hosting star epsilon Tau, which is one of the four red giants located in the Hyades. Methods. We analysed time-series data from both ground and space to perform the asteroseismic analysis. By combining high signal-to-noise radial-velocity data from the ground-based SONG network with continuous space-based data from the revised Kepler mission K2, we derive and characterize 27 individual oscillation modes for epsilon Tau, along with global oscillation parameters such as the large frequency separation Delta v and the ratio between the amplitude of the oscillations measured in radial velocity and intensity as a function of frequency. The latter has been measured previously for only two stars, the Sun and Procyon. Combining the seismic analysis with interferometric and spectroscopic measurements, we derive physical parameters for epsilon Tau, and discuss its evolutionary status. Results. Along with other physical parameters, we derive an asteroseismic mass for epsilon Tau of M = 2.458 +/- 0.073 M-circle dot, which is slightly lower than previous estimates, and which leads to a revised minimum mass of the planetary companion. Noting that the SONG and K2 data are non-simultaneous, we estimate the amplitude ratio between intensity and radial velocity to be 42.2 +/- 2.3 ppm m(-1) s, which is higher than expected from scaling relations. |
| WOS关键词 | SOLAR-LIKE OSCILLATIONS ; EFFECTIVE TEMPERATURES ; ANGULAR DIAMETERS ; STARS ; PHOTOMETRY ; HIPPARCOS ; MASS ; ACCURACY ; MISSION ; SYSTEMS |
| 资助项目 | Danish National Research Foundation[DNRF106] ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council[267864] ; NASA through the Sagan Fellowship Program ; National Aeronautics and Space Administration[NNX17AF76G] ; National Aeronautics and Space Administration[80NSSC18K0362] ; NASA Science Mission directorate |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000458832400001 |
| 资助机构 | Danish National Research Foundation ; Danish National Research Foundation ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission directorate ; NASA Science Mission directorate ; Danish National Research Foundation ; Danish National Research Foundation ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission directorate ; NASA Science Mission directorate ; Danish National Research Foundation ; Danish National Research Foundation ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission directorate ; NASA Science Mission directorate ; Danish National Research Foundation ; Danish National Research Foundation ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) - European Research Council ; NASA through the Sagan Fellowship Program ; NASA through the Sagan Fellowship Program ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission directorate ; NASA Science Mission directorate |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/25110]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Arentoft, T. |
| 作者单位 | 1.Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark 2.Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia 3.Univ Copenhagen, Ctr Star & Planet Format, Niels Bohr Inst, Oster Voldgade 5, DK-1350 Copenhagen, Denmark 4.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China 5.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China 6.NYU, Ctr Cosmol & Particle Phys, Dept Phys, 726 Broadway, New York, NY 10003 USA 7.Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA 8.Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW 2006, Australia 9.Inst Astrofis Canarias, Tenerife 38205, Spain 10.Univ La Laguna, E-38206 Tenerife, Spain |
| 推荐引用方式 GB/T 7714 | Arentoft, T.,Grundahl, F.,White, T. R.,et al. Asteroseismology of the Hyades red giant and planet host epsilon Tauri[J]. ASTRONOMY & ASTROPHYSICS,2019,622:12. |
| APA | Arentoft, T..,Grundahl, F..,White, T. R..,Slumstrup, D..,Handberg, R..,...&Jorgensen, U. G..(2019).Asteroseismology of the Hyades red giant and planet host epsilon Tauri.ASTRONOMY & ASTROPHYSICS,622,12. |
| MLA | Arentoft, T.,et al."Asteroseismology of the Hyades red giant and planet host epsilon Tauri".ASTRONOMY & ASTROPHYSICS 622(2019):12. |
入库方式： OAI收割
来源：国家天文台
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