Seismic Study of the gamma Doradus-type Pulsations in the Eclipsing Binary KIC 10486425

doi:10.3847/1538-4357/aadd9a

CORC > 国家天文台 > 中国科学院国家天文台

	Seismic Study of the gamma Doradus-type Pulsations in the Eclipsing Binary KIC 10486425
	Zhang, X. B.1; Fu, J. N.2; Luo, C. Q.1; Ren, A. B.3; Yan, Z. Z.3
刊名	ASTROPHYSICAL JOURNAL
	2018-10-01
卷号	865 期号:2 页码:10
关键词	asteroseismology binaries: eclipsing stars: individual (KIC 10486425) stars: interiors stars: oscillations
ISSN号	0004-637X
DOI	10.3847/1538-4357/aadd9a
英文摘要	We present a photometric and spectroscopic analysis of the eclipsing binary KIC 10486425. Synthesis of the light curve and radial velocity measurements indicates that this binary is a circular, synchronized, detached system. The masses and radii of the two components are determined as M-1 = 1.54 M-circle dot, M-2 = 1.11 M-circle dot, R-1 = 1.47 R-circle dot and R-2 = 1.60 R-circle dot, respectively. The cooler secondary star is more evolved, while the primary is still on the zero-age main sequence, suggesting that KIC 10486425 could be an Algol system. After removal of the binarity effects from the observed Kepler data, multiple frequency analysis is applied to the outside-eclipse light residuals, revealing that the primary component of KIC 10486425 is a gamma Dor type pulsating star with a dominant period of 0.758 days. A total of 160 pulsation frequencies with significant confidence are extracted in the g-mode region, from which a period-spacing pattern is identified which clearly shows a downward slope. Synthesis of the period-spacing pattern leads to a mode identification of (1 = 2, m = 2) for the pulsations with an asymptotic period spacing of Delta Pi(l) (= 2) - 1803.5 s. The near- core rotation rate is derived as f(rot) = 0.161 day(-1), about 15% slower than the orbital frequency of this synchronized binary, suggesting that the core and the envelope rotate differentially.
资助项目	National Natural Science Foundation of China (NSFC) ; NSFC/CAS Joint Fund of Astronomy[11873002] ; NSFC/CAS Joint Fund of Astronomy[U1731111] ; Beijing Natural Science Foundation[1184018]
WOS关键词	DELTA-SCUTI ; ROTATING STARS ; LIGHT CURVES ; CATALOG ; OSCILLATIONS ; PULSATORS ; VARIABLES ; MISSION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000445888000001
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC/CAS Joint Fund of Astronomy ; NSFC/CAS Joint Fund of Astronomy ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC/CAS Joint Fund of Astronomy ; NSFC/CAS Joint Fund of Astronomy ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC/CAS Joint Fund of Astronomy ; NSFC/CAS Joint Fund of Astronomy ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC/CAS Joint Fund of Astronomy ; NSFC/CAS Joint Fund of Astronomy ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22866]
专题	中国科学院国家天文台
通讯作者	Zhang, X. B.
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 3.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China
推荐引用方式 GB/T 7714	Zhang, X. B.,Fu, J. N.,Luo, C. Q.,et al. Seismic Study of the gamma Doradus-type Pulsations in the Eclipsing Binary KIC 10486425[J]. ASTROPHYSICAL JOURNAL,2018,865(2):10.
APA	Zhang, X. B.,Fu, J. N.,Luo, C. Q.,Ren, A. B.,&Yan, Z. Z..(2018).Seismic Study of the gamma Doradus-type Pulsations in the Eclipsing Binary KIC 10486425.ASTROPHYSICAL JOURNAL,865(2),10.
MLA	Zhang, X. B.,et al."Seismic Study of the gamma Doradus-type Pulsations in the Eclipsing Binary KIC 10486425".ASTROPHYSICAL JOURNAL 865.2(2018):10.