KIC 5197256: an eclipsing binary containing a delta Scuti variable star

doi:10.1088/1674-4527/21/9/224

	KIC 5197256: an eclipsing binary containing a delta Scuti variable star
	Lv, Cheng-Long 1,2; Esamdin, Ali 1,2; Liu, Jun-Hui 3; Zeng, Xiang-Yun 1,2; Yang, Tao-Zhi 4
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	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.
资助项目	National Natural Science Foundation of China[U2031209]
WOS关键词	LIGHT CURVES ; MASS-RATIO ; KEPLER ; FREQUENCY ; MODULATION ; CATALOG ; OSCILLATIONS ; VARIABILITY ; PULSATIONS ; SYSTEM
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000714226400001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
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.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xiamen Univ, Dept Astron, Xiamen 361005, Peoples R China 4.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, 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.