| Asteroseismology of Triple-mode Radial δ Scuti Star: TIC 400562821 | |
Sun, Xiao-Ya1; Zuo, Zhao-Yu1; Yang, Tao-Zhi1; Lares-Martiz, Mariel2; Li Z(李志)3 ; Guo, Zhao4
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2024-11-01 | |
| 卷号 | 976期号:1 |
| DOI | 10.3847/1538-4357/ad87eb |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 摘要 | We investigated the pulsating behavior of TIC 400562821 using high-precision observations from TESS. Fourier analysis of time-series data revealed three independent frequencies. The period ratios of F to F1 (0.774) and F to F2 (0.625), along with an amplitude change of approximately 0.1 mag, indicate that TIC 400562821 is a triple-mode High-Amplitude delta Scuti (HADS) star. Using the Best Parent Method and the Gamma (O) functions, we identified that the harmonics and sum combination frequencies of F and F1 are caused by the nonlinear response of the stellar medium to pulsation. We also analyzed the amplitude variations of F, F1, and F2. Observational data over 76 days show stable amplitudes for these modes. However, Radial Stellar Pulsations modeling suggests that, over 10,000 cycles, the amplitude of F remains constant, while F1 gradually decreases and F2 approaches zero. This implies that TIC 400562821 may eventually evolve into a single-mode HADS star. Furthermore, asteroseismic modeling was performed, and several effects, such as the mixing-length parameter alpha MLT and nonadiabatic, were examined on this star. In view of the results by Daszy & nacute;ska-Daszkiewicz et al. (i.e., alpha (MLT )< similar to 1 for delta Scuti stars), TIC 400562821 is suggested to be more likely in the post-main-sequence stage, with mass M = 1.34-1.38 M (circle dot) and metallicity Z = 0.007-0.008, but still warrants further study to ascertain its nature. |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12473043]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12003020]; National Natural Science Foundation of China[AST-1910396]; National Natural Science Foundation of China[AST-2108975]; NSF[80NSSC22K0622]; NSF[80NSSC21K0245]; NSF[NNX16AB76G]; NASA[101071505]; European Research Council (ERC) under the Horizon Europe program |
| 项目资助者 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12473043, 12003020] ; National Natural Science Foundation of China[AST-1910396, AST-2108975] ; NSF[80NSSC22K0622, 80NSSC21K0245, NNX16AB76G] ; NASA[101071505] ; European Research Council (ERC) under the Horizon Europe program |
| 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 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:001352768600001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | CONVECTIVE BOUNDARIES ; 1ST OVERTONE ; MODULES ; ROTATION ; IDENTIFICATION ; PULSATION ; MASSES |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27687 |
| 专题 | 恒星物理研究组 |
| 作者单位 | 1.Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China; [email protected]; 2.Embry-Riddle Aeronautical University, USA; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 4.Institute of Astronomy (IvS), KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium |
| 推荐引用方式 GB/T 7714 | Sun, Xiao-Ya,Zuo, Zhao-Yu,Yang, Tao-Zhi,et al. Asteroseismology of Triple-mode Radial δ Scuti Star: TIC 400562821[J]. ASTROPHYSICAL JOURNAL,2024,976(1). |
| APA | Sun, Xiao-Ya,Zuo, Zhao-Yu,Yang, Tao-Zhi,Lares-Martiz, Mariel,李志,&Guo, Zhao.(2024).Asteroseismology of Triple-mode Radial δ Scuti Star: TIC 400562821.ASTROPHYSICAL JOURNAL,976(1). |
| MLA | Sun, Xiao-Ya,et al."Asteroseismology of Triple-mode Radial δ Scuti Star: TIC 400562821".ASTROPHYSICAL JOURNAL 976.1(2024). |
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