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Is there large convective-core overshooting in Kepler targets KIC 2837475 and 11081729?
Zhang, Jianwei1,2
2020-10-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume497Issue:4Pages:4042-4050
AbstractThe ratio of small-to-large separations r(010) has been widely used in helioseismology and asteroseismology to investigate the internal structure of a star, as it is approximately independent of the structure of the outer layers. Several studies have used this tool to constrain the convective-core overshooting of main-sequence stars (i.e. 0.0 <= delta(ov) <= 0.2). This is consistent with the generally accepted values. However, Yang et al. have proposed that there is large convective-core overshooting in the Kepler targets KIC 2837475 and 11081729: 1.2 <= delta(ov) <= 1.6 and 1.7 <= delta(ov) <= 1.8, respectively. These are much larger than the normal values. Thus, the aim of this study is to re-investigate the ratios of the two stars using a model-independent method with the latest p-mode observations. Our results indicate that there is no robustness for including such a large convective-core overshooting while modelling these two stars. In fact, this leads to over-fitting, and the observational constraints of r(010) prefer models with a normal convective-core overshooting (i.e. 0.0 <= d(ov) <= 0.2) as the candidates for the best-fitting model of KIC 2837475 and 11081729.
Keywordstars: interiors stars: oscillations stars: solar-type
Funding OrganizationNational Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China
DOI10.1093/mnras/staa2199
WOS KeywordSOLAR-TYPE ; ACOUSTIC-OSCILLATIONS ; FREQUENCY-SEPARATION ; RATIO
Language英语
Funding ProjectNational Natural Science Foundation of China NSFC[11988101] ; National Natural Science Foundation of China NSFC[11773005] ; National Natural Science Foundation of China NSFC[U1631236] ; National Natural Science Foundation of China NSFC[11703001] ; National Natural Science Foundation of China NSFC[U1731238] ; National Natural Science Foundation of China NSFC[U1938117] ; National Natural Science Foundation of China NSFC[11725313] ; National Natural Science Foundation of China NSFC[11721303] ; International Partnership Program of Chinese Academy of Sciences[114A11KYSB20160008] ; National Key R&D Program of China[2016YFA0400702]
Funding OrganizationNational Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China NSFC ; National Natural Science Foundation of China NSFC ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000587739300002
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80845
Collection中国科学院国家天文台
Corresponding AuthorZhang, Jianwei
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, CAS Key Lab FAST, Natl Astron Observ, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jianwei. Is there large convective-core overshooting in Kepler targets KIC 2837475 and 11081729?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,497(4):4042-4050.
APA Zhang, Jianwei.(2020).Is there large convective-core overshooting in Kepler targets KIC 2837475 and 11081729?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,497(4),4042-4050.
MLA Zhang, Jianwei."Is there large convective-core overshooting in Kepler targets KIC 2837475 and 11081729?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 497.4(2020):4042-4050.
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