An attempt to calibrate core overshooting using the seismic properties of low-mass stars

被引：2

作者：

Deheuvels, S. ^{[1
,2
,3
,4
]}

Aguirre, V. Silva ^{[5
]}

Cunha, M. S. ^{[6
,7
,8
]}

Appourchaux, T. ^{[9
]}

Ballot, J. ^{[1
,2
,3
,4
]}

Brandao, I. ^{[6
,7
,8
]}

Lebreton, Y. ^{[10
,11
]}

Michel, E. ^{[12
]}

机构：

[1] Univ Toulouse, Toulouse, France

[2] UPS OMP, Toulouse, France

[3] IRAP, F-31400 Toulouse, France

[4] CNRS, F-31400 Toulouse, France

[5] Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark

[6] Univ Porto, CAUP, Inst Astrofis & Ciencias Espaco, P-4150762 Oporto, Portugal

[7] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal

[8] Univ Porto, Fac Ciencias, P-4150762 Oporto, Portugal

[9] Univ Paris 11, Inst Astrophys Spatiale, CNRS, UMR 8617, F-91405 Orsay, France

[10] Observ Paris, CNRS, GEPI, UMR 8111, F-92195 Meudon, France

[11] Univ Rennes 1, CNRS, Inst Phys Rennes, UMR 6251, F-35042 Rennes, France

[12] Univ Paris 07, Univ Paris 06, Observ Paris, LESIA,CNRS,UMR 8109, F-92195 Meudon, France

来源：

SPACE PHOTOMETRY REVOLUTION - COROT SYMPOSIUM 3, KEPLER KASC-7 JOINT MEETING | 2015年 / 101卷

关键词：

CONVECTIVE-CORE;

D O I：

10.1051/epjconf/201510101013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The sizes of stellar convective cores remain uncertain because of our poor understanding of the interface between convective and radiative zones. The very high precision of the seismic data provided by the CoRoT and Kepler space missions offers a great opportunity to search for the signature of convective cores in main-sequence stars. We here validate the seismic diagnostic based on the r(010) ratios, which has been proposed to probe the size of convective cores, and we use it on a sample of 24 specially chosen Kepler targets. We thus constrain the extension of the core in 14 targets and find a tendency of the core extension to increase with stellar mass in this mass range. These results will be presented in more detail in a paper in preparation.

引用

页数：5

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