KIC 5197256: an eclipsing binary containing a delta Scuti variable star
文献类型：期刊论文
| 作者 | Lv, Cheng-Long3,4 ; Esamdin, Ali3,4; Liu, Jun-Hui2; Zeng, Xiang-Yun3,4; Yang, Tao-Zhi1
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 21期号:9页码:13 |
| 关键词 | binaries: eclipsing-stars: individual: KIC 5197256 stars: variables: delta Scuti stars: oscillations |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/21/9/224 |
| 通讯作者 | Esamdin, Ali(aliyi@xao.ac.cn) |
| 英文摘要 | This paper reports analysis of an eclipsing binary system KIC 5197256 with a delta Sct variable component. Utilizing light-curve modeling, several stellar parameters are derived, e.g., temperature, mass, and mass ratio. The O - C diagram is a straight line with a negative slope which means that its period is almost constant for about 2 yr. Frequency analyses are performed for the residual light curve after subtracting the binary variations. The frequency spectrum reveals that one component star is a delta Scuti variable. Large frequency separation is cross-identified with the histogram graph and the Fourier transform method. Based on the large separation and density relationship, the mean density of the delta Sct component is estimated to be 0.05 g.cm(-3). Five frequencies with the same frequency spacing in the range of 25 d(-1) - 34 d(-1) are detected. Statistically, the pulsation amplitudes of delta Sct stars increase with decreasing of rotations, so we propose that KIC 5197256 might have a relatively large rotational velocity, and the frequency f(10) might be the rotation frequency. |
| WOS关键词 | LIGHT CURVES ; MASS-RATIO ; KEPLER ; FREQUENCY ; MODULATION ; CATALOG ; OSCILLATIONS ; VARIABILITY ; PULSATIONS ; SYSTEM |
| 资助项目 | National Natural Science Foundation of China[U2031209] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000714226400001 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4330]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 通讯作者 | Esamdin, Ali |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, Peoples R China 2.Xiamen Univ, Dept Astron, Xiamen 361005, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lv, Cheng-Long,Esamdin, Ali,Liu, Jun-Hui,et al. KIC 5197256: an eclipsing binary containing a delta Scuti variable star[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(9):13. |
| APA | Lv, Cheng-Long,Esamdin, Ali,Liu, Jun-Hui,Zeng, Xiang-Yun,&Yang, Tao-Zhi.(2021).KIC 5197256: an eclipsing binary containing a delta Scuti variable star.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(9),13. |
| MLA | Lv, Cheng-Long,et al."KIC 5197256: an eclipsing binary containing a delta Scuti variable star".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.9(2021):13. |
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来源：新疆天文台
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