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An Independent Asteroseismic Analysis of the Fundamental Parameters and Internal Structure of the Solar-like Oscillator KIC 6225718
Wu T(吴涛)1,2; Li Y(李焱)1,2
发表期刊The Astrophysical Journal
2017-08-30
卷号846期号:1
DOI10.3847/1538-4357/aa8361
产权排序第1完成单位
收录类别SCI
关键词Asteroseismology Stars: Fundamental Parameters Stars: Individual: (Kic 6225718) Stars: Interiors Stars: Oscillations Stars: Solar-type
摘要

Abstract Asteroseismology is a useful tool that is usually used to probe stellar interiors and to determine stellar fundamental parameters, such as stellar mass, radius, and surface gravity. In order to probe stellar interiors, making comparisons between observations and models is usually used with the χ 2 -minimization method. The work of Wu & Li reported that the best parameter determined by the χ 2 -matching process is the acoustic radius for pure p-mode oscillations. In the present work, based on the theoretical calculations of Wu & Li, we will independently analyze the seismic observations of KIC 6225718 to determine its fundamental parameters and to investigate its interior properties. First, in order to test the method, we use it in the Sun to determine its fundamental parameters and to investigate interiors. Second, we independently determine the fundamental parameters of KIC 6225718 without any other non-seismic constraint. Therefore, those determined fundamental parameters are independent of those determined by other methods. They can be regarded as independent references in other analyses. Finally, we analyze the stellar internal structure and find that KIC 6225718 has a convective core with the size of 0.078–0.092 R ☉ . Its overshooting parameter f ov in the core is around 0.010. In addition, its center hydrogen X c is about 0.264–0.355.

资助项目NSFC of China[11333006] ; NSFC of China[11503076] ; NSFC of China[11521303] ; NASAs Science Mission Directorate
项目资助者NSFC of China[11333006, 11503076, 11521303] ; NASAs Science Mission Directorate
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000408746000005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Geneva-copenhagen Survey ; Bolometric Corrections ; Effective Temperatures ; Stellar Oscillations ; Element Diffusion ; G-dwarf ; Stars ; Mission ; Ages ; Neighborhood
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11892
专题恒星物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Wu T(吴涛)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, China
2.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, China
推荐引用方式
GB/T 7714
Wu T,Li Y. An Independent Asteroseismic Analysis of the Fundamental Parameters and Internal Structure of the Solar-like Oscillator KIC 6225718[J]. The Astrophysical Journal,2017,846(1).
APA Wu T,&Li Y.(2017).An Independent Asteroseismic Analysis of the Fundamental Parameters and Internal Structure of the Solar-like Oscillator KIC 6225718.The Astrophysical Journal,846(1).
MLA Wu T,et al."An Independent Asteroseismic Analysis of the Fundamental Parameters and Internal Structure of the Solar-like Oscillator KIC 6225718".The Astrophysical Journal 846.1(2017).
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