KIC 5623923: A Faint Eclipsing Binary Consisting of δ Scuti Pulsations
文献类型：期刊论文
| 作者 | Yang, Tao-Zhi1; Zuo, Zhao-Yu1,2; Guo, Shi-ping1; Ding, Xu3,4,5; Wang, Hao-zhi6,7; Yaqup, Shahidin6; Esamdin, Ali6,7 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026 |
| 卷号 | 996期号:1页码:54 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae232c |
| 产权排序 | 6 |
| 英文摘要 | In this paper, we present a detailed analysis of the light variation of KIC 5623923 using high-precision time-series data from the Kepler mission. The analysis reveals this target is an eclipsing binary system with delta Scuti-type pulsations from the primary component, rather than from the secondary as previously reported. The frequency analysis of three short-cadence data reveals 41 significant frequencies, including the orbital frequency (forb = 0.827198 day-1) due to orbital motion from the binary system and the pulsational frequencies. Most of the pulsational signal lies in the frequency range of 20-32 day-1, with amplitude between 0.3 and 8.8 mmag, in which seven peaks are identified as "independent" modes. The strongest one (f3 = 28.499399 day-1) likely corresponds to a high-order radial mode. In other peaks (f7, f10, and f18), several pairs of multiplet structures centered on them are found. The fitting of spectral energy distribution using the collected photometry measurement of multiple bands reveals the effective temperatures of the primary and secondary components as 8348-225+230 K and 4753-229+237 K, respectively, which place the primary star in the classical pulsating instability zone. The characteristic light-curve morphology and short orbital period are consistent with a tidally locked system. Based on the characteristics of amplitude spectra of pulsating stars in close binaries, the analysis of the multiplet structures reveals that three independent frequencies (i.e., f7, f10, and f18) correspond to nonradial modes with l = 2, while the associated sidelobes are produced by the orbital motion. We highlight the potential of this method in future studies of pulsating binary stars. |
| WOS关键词 | ABSOLUTE DIMENSIONS ; PHASE MODULATION ; FINDING BINARIES ; INPUT CATALOG ; FOURIER VIEW ; FM STARS ; KEPLER ; PULSATORS ; GAIA ; EXOPLANETS |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[Nos. 12003020] ; MOST divided by National Natural Science Foundation of China (NSFC)[12473043] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001647673500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8453]  |
| 专题 | 光学天文与技术应用研究室_变星研究团组 |
| 通讯作者 | Zuo, Zhao-Yu |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Phys, Minist Educ, Key Lab Nonequilibrium Synth & Modulat Condensed M, Xian 710049, Peoples R China 2.Eberhard Karls Univ Tubingen, Inst Astron & Astrophys, Kepler Ctr Astro & Particle Phys, Sand 1, D-72076 Tubingen, Germany 3.Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China 4.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, POB 110, Kunming 650216, Peoples R China 5.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Tao-Zhi,Zuo, Zhao-Yu,Guo, Shi-ping,et al. KIC 5623923: A Faint Eclipsing Binary Consisting of δ Scuti Pulsations[J]. ASTROPHYSICAL JOURNAL,2026,996(1):54. |
| APA | Yang, Tao-Zhi.,Zuo, Zhao-Yu.,Guo, Shi-ping.,Ding, Xu.,Wang, Hao-zhi.,...&Esamdin, Ali.(2026).KIC 5623923: A Faint Eclipsing Binary Consisting of δ Scuti Pulsations.ASTROPHYSICAL JOURNAL,996(1),54. |
| MLA | Yang, Tao-Zhi,et al."KIC 5623923: A Faint Eclipsing Binary Consisting of δ Scuti Pulsations".ASTROPHYSICAL JOURNAL 996.1(2026):54. |
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