KIC 5768203: A delta Sct Pulsator Modulated by Rotation and Spots
文献类型：期刊论文
| 作者 | Ma, Shuguo5,6 ; Ali, Esamdin5,6; Lv, Chenglong5,6; Wei, Peng6; Yang, TaoZhi4; Niu, Hubiao6; Nie, Jundan3; Liu, Junhui2; Zong, Peng1; Feng, Guojie6
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2022-07-01 |
| 卷号 | 164期号:1页码:12 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/ac6fde |
| 通讯作者 | Ma, Shuguo(mashuguo@xao.ac.cn) |
| 英文摘要 | We perform a detailed analysis of the Kepler target KIC 5768203 based on the Kepler and Transiting Exoplanet Survey Satellite (TESS) data. Three independent frequencies are detected by Fourier analysis of the Kepler long-cadence data: two pulsation frequencies f ( P0) = 7.807874(2) day(-1) and f ( P1) = 9.970035(6) day(-1), which have amplitudes below 1.4 mmag in the Kepler band, and one modulation frequency f (rot) = 0.45813(1) day(-1). Based on a period ratio of 0.7803, f ( P0) and f ( P1) are supposed to be radial frequencies. However, further confirmation is needed. Based on the triplets and phase variations of the two pulsation frequencies, the star is possibly a delta Sct pulsator in a binary system. The modulation frequency f (rot) and its four harmonics could be attributed to the stellar rotation and surface spots. With the rotation frequency f (rot), the rotation velocity of the star is estimated to be 75(3) km s(-1). By analyzing the phase diagram without pulsations, it is inferred that there are starspots (or clusters of starspots) of large area on the surface of KIC 5768203. These starspots are slowly evolving in position and brightness over the course of the Kepler long-cadence observations. The finding of the rotation frequency in the TESS data implies the long-term presence of starspots on the surface of KIC 5768203. |
| WOS关键词 | TURBULENT CONVECTION ; KEPLER OBSERVATIONS ; P-MODE ; SCUTI ; STARS ; ASTEROSEISMOLOGY ; OSCILLATIONS ; FREQUENCIES ; STABILITY ; DISCOVERY |
| 资助项目 | National Natural Science Foundation of China[12003060] ; National Natural Science Foundation of China[U2031209] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2020D01B59] ; Chinese Academy of Sciences (CAS) Light of West China Program[2021-XBQNXZ-029] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000817740500001 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4823]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 通讯作者 | Ma, Shuguo |
| 作者单位 | 1.Beijing Normal Univ, Astron Dept, Beijing 100875, Peoples R China 2.Xiamen Univ, Astron Dept, Xiamen 361005, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China 4.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Shuguo,Ali, Esamdin,Lv, Chenglong,et al. KIC 5768203: A delta Sct Pulsator Modulated by Rotation and Spots[J]. ASTRONOMICAL JOURNAL,2022,164(1):12. |
| APA | Ma, Shuguo.,Ali, Esamdin.,Lv, Chenglong.,Wei, Peng.,Yang, TaoZhi.,...&Zhang, Mengfan.(2022).KIC 5768203: A delta Sct Pulsator Modulated by Rotation and Spots.ASTRONOMICAL JOURNAL,164(1),12. |
| MLA | Ma, Shuguo,et al."KIC 5768203: A delta Sct Pulsator Modulated by Rotation and Spots".ASTRONOMICAL JOURNAL 164.1(2022):12. |
入库方式： OAI收割
来源：新疆天文台
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