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The asteroseismic surface effect from a grid of 3D convection simulations - I. Frequency shifts from convective expansion of stellar atmospheres

Trampedach, Regner; Aarslev, Magnus J.; Houdek, Gunter; Collet, Remo; Christensen-Dalsgaard, J; Stein, Robert F; Asplund, Martin

Description

We analyse the effect on adiabatic stellar oscillation frequencies of replacing the near-surface layers in 1D stellar structure models with averaged 3D stellar surface convection simulations. The main difference is an expansion of the atmosphere by 3D convection, expected to explain a major part of the asteroseismic surface effect, a systematic overestimation of p-mode frequencies due to inadequate surface physics.We employ pairs of 1D stellar envelope models and 3D simulations from a previous...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/248716
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnrasl/slw230
Access Rights: Open Access

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