16 citations · 65 across the 9 of their papers we have counts for
9 papers
The sensitivity and behaviour of the curvature in the échelle diagram of red-giant stars
S. Hekker, Y. Elsworth, S. Basu +5
In the convective envelopes of relatively cool stars, oscillations are excited by turbulent convection. In these so-called solar-like oscillators, radial oscillation modes appear a…
Impact of near-degeneracy effects on linear rotational inversions for red-giant stars
F. Ahlborn, J. M. Joel Ong, J. Van Beeck +3
Accurate estimates of internal red-giant rotation rates are a crucial ingredient for constraining and improving current models of stellar rotation. Asteroseismic rotational inversi…
The efficiency of mixed modes for angular momentum transport
Beatriz Bordadágua, Felix Ahlborn, Quentin Coppée +3
Core rotation rates of red-giant stars inferred from asteroseismic observations are substantially lower than predicted by current stellar models. This indicates the lack of an effi…
Implications of a turbulent convection model for classical Cepheids
M. Deka, F. Ahlborn, T. A. M. Braun +1
The appearance of blue loops in the evolutionary tracks of intermediate-mass core He-burning stars is essential for explaining the observed characteristics of Cepheids. The blue lo…
The robustness of inferred envelope and core rotation rates of red-giant stars from asteroseismology
F. Ahlborn, E. P. Bellinger, S. Hekker +2
Rotation is an important, yet poorly-modelled phenomenon of stellar structure and evolution. Accurate estimates of internal rotation rates are therefore valuable for constraining s…
Testing a non-local 1-equation turbulent convection model: A solar model
T. A. M. Braun, F. Ahlborn, A. Weiss
Turbulent convection models treat stellar convection more physically than standard mixing-length theory by including non-local effects. We recently successfully applied the Kuhfuss…
Improved asteroseismic inversions for red-giant surface rotation rates
F. Ahlborn, E. P. Bellinger, S. Hekker +2
Asteroseismic observations of internal stellar rotation have indicated a substantial lack of angular momentum transport in theoretical models of subgiant and red-giant stars. Accur…
Stellar evolution models with overshooting based on 3-equation non-local theories, II. Main-sequence models of A- and B-type stars
Felix Ahlborn, Friedrich Kupka, Achim Weiss +1
Convective overshoot mixing is a critical ingredient of stellar structure models, but is treated in most cases by ad hoc extensions of the mixing-length theory for convection. Adva…
Stellar evolution models with overshooting based on 3-equation non-local theories I. Physical basis and the computation of the dissipation rate
F. Kupka, F. Ahlborn, A. Weiss
Context. Mixing by convective overshooting has long been suggested to play an important role for the amount of hydrogen available to nuclear burning in convective cores of stars. T…