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• W2751167965 abstract "We present a new method for replacing the outermost layers of stellar models with interpolated atmospheres based on results from 3D simulations, in order to correct for structural inadequacies of these layers. This replacement is known as patching. Tests, based on 3D atmospheres from three different codes and interior models with different input physics, are performed. Using solar models, we investigate how different patching criteria affect the eigenfrequencies. These criteria include the depth, at which the replacement is performed, the quantity, on which the replacement is based, and the mismatch in $T_mathrm{eff}$ and $log g$ between the un-patched model and patched 3D atmosphere. We find the eigenfrequencies to be unaltered by the patching depth deep within the adiabatic region, while changing the patching quantity or the employed atmosphere grid leads to frequency shifts that may exceed $1,mumathrm{Hz}$. Likewise, the eigenfrequencies are sensitive to mismatches in $T_mathrm{eff}$ or $log g$. A thorough investigation of the accuracy of a new scheme, for interpolating mean 3D stratifications within the atmosphere grids, is furthermore performed. Throughout large parts of the atmosphere grids, our interpolation scheme yields sufficiently accurate results for the purpose of asteroseismology. We apply our procedure in asteroseismic analyses of four textit{Kepler} stars and draw the same conclusions as in the solar case: Correcting for structural deficiencies lowers the eigenfrequencies, this correction is slightly sensitive to the patching criteria, and the remaining frequency discrepancy between models and observations is less frequency-dependent. Our work shows the applicability and relevance of patching in asteroseismology." @default.
• W2751167965 created "2017-09-15" @default.
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• W2751167965 date "2017-08-30" @default.
• W2751167965 modified "2023-09-29" @default.
• W2751167965 title "Theoretical oscillation frequencies for solar-type dwarfs from stellar models with 〈3D〉-atmospheres" @default.
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• W2751167965 doi "https://doi.org/10.1093/mnras/stx2226" @default.
• W2751167965 hasPublicationYear "2017" @default.
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