Modelling Kepler red giants in eclipsing binaries: calibrating the mixing-length parameter with asteroseismology

doi:10.1093/mnras/stx3079

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	Modelling Kepler red giants in eclipsing binaries: calibrating the mixing-length parameter with asteroseismology
	Li, Tanda 1,2,3; Bedding, Timothy R.1,2; Huber, Daniel 1,2,4,5; Ball, Warrick H.2,6,7,8; Stello, Dennis 1,2,9; Murphy, Simon J.1,2; Bland-Hawthorn, Joss 1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-03-01
卷号	475 期号:1 页码:981-998
关键词	stars: evolution stars: oscillations
ISSN号	0035-8711
DOI	10.1093/mnras/stx3079
英文摘要	Stellar models rely on a number of free parameters. High-quality observations of eclipsing binary stars observed by Kepler offer a great opportunity to calibrate model parameters for evolved stars. Our study focuses on six Kepler red giants with the goal of calibrating the mixing-length parameter of convection as well as the asteroseismic surface term in models. We introduce a new method to improve the identification of oscillation modes that exploits theoretical frequencies to guide the mode identification ('peak-bagging') stage of the data analysis. Our results indicate that the convective mixing-length parameter (alpha) is approximate to 14 per cent larger for red giants than for the Sun, in agreement with recent results from modelling the APOGEE stars. We found that the asteroseismic surface term (i.e. the frequency offset between the observed and predicted modes) correlates with stellar parameters (T-eff, log g) and the mixing-length parameter. This frequency offset generally decreases as giants evolve. The two coefficients a(-1) and a(3) for the inverse and cubic terms that have been used to describe the surface term correction are found to correlate linearly. The effect of the surface term is also seen in the p-g mixed modes; however, established methods for correcting the effect are not able to properly correct the g-dominated modes in late evolved stars.
资助项目	NASA's Science Mission Directorate ; Australian Research Council DP[DP150104667] ; Danish National Research Foundation[DNRF106] ; National Natural Science Foundation of China[11503039] ; National Natural Science Foundation of China[11427901] ; National Natural Science Foundation of China[11273007] ; National Natural Science Foundation of China[10933002] ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; UK Science and Technology Facilities Council (STFC)
WOS关键词	3D CONVECTION SIMULATIONS ; CHEMICAL-COMPOSITION ; STARS ; OSCILLATIONS ; MODES ; RATIO
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000427144200077
资助机构	NASA's Science Mission Directorate ; NASA's Science Mission Directorate ; Australian Research Council DP ; Australian Research Council DP ; Danish National Research Foundation ; Danish National Research Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; NASA's Science Mission Directorate ; NASA's Science Mission Directorate ; Australian Research Council DP ; Australian Research Council DP ; Danish National Research Foundation ; Danish National Research Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; NASA's Science Mission Directorate ; NASA's Science Mission Directorate ; Australian Research Council DP ; Australian Research Council DP ; Danish National Research Foundation ; Danish National Research Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; NASA's Science Mission Directorate ; NASA's Science Mission Directorate ; Australian Research Council DP ; Australian Research Council DP ; Danish National Research Foundation ; Danish National Research Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; Deutscher Akademischer Austauschdienst (DAAD) through the Go8 Australia-Germany Joint Research Co-operation Scheme ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/37159]
专题	中国科学院国家天文台
通讯作者	Li, Tanda; Bedding, Timothy R.
作者单位	1.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia 2.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 4.Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA 5.SETI Inst, 189 Bernardo Ave, Mountain View, CA 94043 USA 6.Georg August Univ Gottingen, Inst Astrophys, Friedrich Hund Pl 1, D-37077 Gottingen, Germany 7.Max Planck Inst Stromungsforsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany 8.Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England 9.Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia
推荐引用方式 GB/T 7714	Li, Tanda,Bedding, Timothy R.,Huber, Daniel,et al. Modelling Kepler red giants in eclipsing binaries: calibrating the mixing-length parameter with asteroseismology[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,475(1):981-998.
APA	Li, Tanda.,Bedding, Timothy R..,Huber, Daniel.,Ball, Warrick H..,Stello, Dennis.,...&Bland-Hawthorn, Joss.(2018).Modelling Kepler red giants in eclipsing binaries: calibrating the mixing-length parameter with asteroseismology.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,475(1),981-998.
MLA	Li, Tanda,et al."Modelling Kepler red giants in eclipsing binaries: calibrating the mixing-length parameter with asteroseismology".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.1(2018):981-998.