Frequency Analysis of KIC 1573174: Shedding Light on the Nature of HADS Stars
文献类型：期刊论文
| 作者 | Lv, Chenglong4,5 ; Esamdin, Ali4,5; Pascual-Granado, J.3; Yang, Taozhi2; Shen, Dongxiang1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2022-06-01 |
| 卷号 | 932期号:1页码:10 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac69d9 |
| 通讯作者 | Lv, Chenglong(aliyi@xao.ac.cntable) |
| 英文摘要 | We propose that KIC 1573174 is a quadruple-mode delta Scuti star with pulsation amplitudes between those of the high-amplitude Delta Scuti star group and average low-amplitude pulsators. The radial modes detected in this star provide a unique opportunity to exploit asteroseismic techniques up to their limits. Detailed frequency analysis is given for the light curve from the Kepler mission. The variation of the light curve is dominated by the strongest mode with a frequency of F0 = 7.3975 day(-1), as shown by Fourier analysis of long cadence data (Q1-Q17, spanning 1460 days), indicating that the target is a delta Scuti star. The other three independent modes with F1 = 9.4397 day(-1), F2 = 12.1225 day(-1), and F3 = 14.3577 day(-1), have ratios of P (1)/P (0), P (2)/P (0), and P (3)/P (0) estimated as 0.783, 0.610, and 0.515, which indicate that KIC 1573174 is a quadruple-mode delta Scuti star. A different approach has been used to determine the O - C through the study of phase modulation. The change of period (1/P)dP/dt is obtained resulting in -1.14 x 10(-6) yr(-1) and -4.48 x 10(-6) yr(-1) for F0 and F1 respectively. Based on frequency parameters (i.e., F0, F1, F2, and F3), a series of theoretical models were conducted by employing the stellar evolution code MESA. The ratio of observed f (1)/f (2) is larger than that of the model, which may be caused by the rotation of the star. We suggest high-resolution spectral observation is highly desired in the future to further constrain models. |
| WOS关键词 | DELTA-SCUTI STAR ; DOUBLE-MODE ; PERIOD CHANGES ; PETERSEN DIAGRAMS ; AMPLITUDE ; ROTATION ; CORE ; ASTEROSEISMOLOGY ; VARIABILITY ; MODULATION |
| 资助项目 | National Natural Science Foundation of China[U2031209] ; National Natural Science Foundation of China[12003020] ; Programas Estatales de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i y de I+D+i Orientada a los Retos de la Sociedad, Spanish Ministry of Science, Innovation and Universities (MCIU)[PID2019-107061GB-C63] ; State Agency for Research, Spanish Ministry of Science, Innovation and Universities (MCIU)[SEV-2017-0709] ; National Development and Reform Commission |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000810746100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China ; Programas Estatales de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i y de I+D+i Orientada a los Retos de la Sociedad, Spanish Ministry of Science, Innovation and Universities (MCIU) ; State Agency for Research, Spanish Ministry of Science, Innovation and Universities (MCIU) ; National Development and Reform Commission |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4811]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 通讯作者 | Lv, Chenglong |
| 作者单位 | 1.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China 2.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, Peoples R China 3.CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lv, Chenglong,Esamdin, Ali,Pascual-Granado, J.,et al. Frequency Analysis of KIC 1573174: Shedding Light on the Nature of HADS Stars[J]. ASTROPHYSICAL JOURNAL,2022,932(1):10. |
| APA | Lv, Chenglong,Esamdin, Ali,Pascual-Granado, J.,Yang, Taozhi,&Shen, Dongxiang.(2022).Frequency Analysis of KIC 1573174: Shedding Light on the Nature of HADS Stars.ASTROPHYSICAL JOURNAL,932(1),10. |
| MLA | Lv, Chenglong,et al."Frequency Analysis of KIC 1573174: Shedding Light on the Nature of HADS Stars".ASTROPHYSICAL JOURNAL 932.1(2022):10. |
入库方式： OAI收割
来源：新疆天文台
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