High order WENO and DG methods for time-dependent convection-dominated PDEs: A brief survey of several recent developments

CW Shu - Journal of Computational Physics, 2016 - Elsevier
For solving time-dependent convection-dominated partial differential equations (PDEs),
which arise frequently in computational physics, high order numerical methods, including …

Modelling of stellar convection

F Kupka, HJ Muthsam - Living Reviews in Computational Astrophysics, 2017 - Springer
The review considers the modelling process for stellar convection rather than specific
astrophysical results. For achieving reasonable depth and length we deal with …

An extended and refined grid of 3D STAGGER model atmospheres-Processed snapshots for stellar spectroscopy

LFR Díaz, C Lagae, AM Amarsi, L Bigot, Y Zhou… - Astronomy & …, 2024 - aanda.org
Context. Traditional one-dimensional hydrostatic model atmospheres introduce systematic
modelling errors into spectroscopic analyses of FGK-type stars. Aims. We present an …

Extreme value statistics for two-dimensional convective penetration in a pre-main sequence star

J Pratt, I Baraffe, T Goffrey, T Constantino… - Astronomy & …, 2017 - aanda.org
Context. In the interior of stars, a convectively unstable zone typically borders a zone that is
stable to convection. Convective motions can penetrate the boundary between these zones …

Mixing and overshooting in surface convection zones of DA white dwarfs: first results from antares

F Kupka, F Zaussinger… - Monthly Notices of the …, 2018 - academic.oup.com
We present results of a large, high-resolution 3D hydrodynamical simulation of the surface
layers of a DA white dwarf (WD) with T eff= 11 800 K and log (g)= 8 using the antares code …

Comparison of 2D and 3D compressible convection in a pre-main sequence star

J Pratt, I Baraffe, T Goffrey, C Geroux… - Astronomy & …, 2020 - aanda.org
Context. A 1D description of stellar dynamics is at the basis of stellar evolution modeling.
Designed to investigate open problems in stellar evolution, the MUltidimensional Stellar …

Pure-helium 3D model atmospheres of white dwarfs

E Cukanovaite, PE Tremblay, B Freytag… - Monthly Notices of …, 2018 - academic.oup.com
We present the first grid of 3D simulations for the pure-helium atmospheres of DB white
dwarfs. The simulations were computed with the co5bold radiation-hydrodynamics code and …

3D spectroscopic analysis of helium-line white dwarfs

E Cukanovaite, PE Tremblay, P Bergeron… - Monthly Notices of …, 2021 - academic.oup.com
In this paper, we present corrections to the spectroscopic parameters of DB and DBA white
dwarfs with− 10.0≤ log (H/He)≤− 2.0, 7.5≤ log g≤ 9.0, and≲ T eff, based on 282 3D …

Spherical-shell boundaries for two-dimensional compressible convection in a star

J Pratt, I Baraffe, T Goffrey, C Geroux, M Viallet… - Astronomy & …, 2016 - aanda.org
Context. Studies of stellar convection typically use a spherical-shell geometry. The radial
extent of the shell and the boundary conditions applied are based on the model of the star …

Stellar evolution models with entropy-calibrated mixing-length parameter: application to red giants

F Spada, P Demarque, F Kupka - Monthly Notices of the Royal …, 2021 - academic.oup.com
We present evolutionary models for solar-like stars with an improved treatment of convection
that results in a more accurate estimate of the radius and effective temperature. This is …