168 citations · 795 across the 18 of their papers we have counts for
17 papers · 1 filter
KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Asteroseismic modelling of the g-mode period-spacing pattern
Alex Kemp, Dario J Fritzewski, Timothy Van Reeth +7
In this work, we aim to estimate the stellar parameters of the primary (Aa) by performing asteroseismic analysis on its period-spacing pattern. We use the C-3PO neural network to p…
Photometric detection of internal gravity waves in upper main-sequence stars. IV. Comparable stochastic low-frequency variability in SMC, LMC, and Galactic massive stars
Dominic M. Bowman, Pieterjan Van Daele, Mathias Michielsen +1
Massive main-sequence stars have convective cores and radiative envelopes, but also sub-surface convection zones caused by partial ionisation. However, the convective properties de…
The impact of asteroseismically calibrated internal mixing on nucleosynthetic wind yields of massive stars
Hannah E. Brinkman, Lorenzo Roberti, Alex Kemp +3
Asteroseismology gives us the opportunity to look inside stars and determine their internal properties. Based on these observations, estimations can be made for the amount of the c…
The impact of radiative levitation on mode excitation of main-sequence B-type pulsators
R. Rehm, J. S. G. Mombarg, C. Aerts +3
Numerical computations of stellar oscillations for models representative of B-type stars predict fewer modes to be excited than observations reveal from modern space-based photomet…
Modelling time-dependent convective penetration in 1D stellar evolution
Cole Johnston, Mathias Michielsen, Evan H. Anders +7
1D stellar evolution calculations produce uncertain predictions for quantities like the age, core mass, core compactness, and nucleo-synthetic yields; a key source of uncertainty i…
Probing the physics in the core boundary layers of the double-lined B-type binary KIC4930889 from its gravito-inertial modes
Mathias Michielsen, Timothy Van Reeth, Andrew Tkachenko +1
Stellar evolution models of B-type stars are still uncertain in terms of internal mixing properties, notably in the area between the convective core and the radiative envelope. Thi…
A calibration point for stellar evolution from massive star asteroseismology
Siemen Burssens, Dominic M. Bowman, Mathias Michielsen +10
Massive stars are progenitors of supernovae, neutron stars and black holes. During the hydrogen-core burning phase their convective cores are the prime drivers of their evolution,…
Predictions for gravity-mode periods and surface abundances in intermediate-mass dwarfs from shear mixing and radiative levitation
Joey S. G. Mombarg, Aaron Dotter, Michel Rieutord +3
The treatment of chemical mixing in the radiative envelopes of intermediate-mass stars has hardly been calibrated so far. Recent asteroseismic studies demonstrated that a constant…
Towards a systematic treatment of observational uncertainties in forward asteroseismic modelling of gravity-mode pulsators
Dominic M. Bowman, Mathias Michielsen
Context. In asteroseismology the pulsation mode frequencies of a star are the fundamental data that are compared to theoretical predictions to determine a star's interior physics.…
Internal mixing of rotating stars inferred from dipole gravity modes
May G. Pedersen, Conny Aerts, Péter I. Pápics +7
During most of their life, stars fuse hydrogen into helium in their cores. The mixing of chemical elements in the radiative envelope of stars with a convective core is able to repl…
Probing the temperature gradient in the core boundary layer of stars with gravito-inertial modes: the case of KIC7760680
M. Michielsen, C. Aerts, D. M. Bowman
Aims: We investigate the thermal and chemical structure in the near-core region of stars with a convective core by means of gravito-inertial modes. We do so by determining the prob…
Variability of OB stars from TESS southern Sectors 1-13 and high-resolution IACOB and OWN spectroscopy
S. Burssens, S. Simón-Díaz, D. M. Bowman +6
Lack of high-precision long-term continuous photometric data for large samples of stars has prevented the large-scale exploration of pulsational variability in the OB star regime.…
The mass discrepancy in intermediate- and high-mass eclipsing binaries: the need for higher convective core masses
A. Tkachenko, K. Pavlovski, C. Johnston +6
(Abridged) Eclipsing, spectroscopic double-lined binary star systems (SB2) are excellent laboratories for calibrating theories of stellar interior structure and evolution. We aim t…
Probing the shape of the mixing profile and of the thermal structure at the convective core boundary through asteroseismology
Mathias Michielsen, May G. Pedersen, Kyle C. Augustson +2
Aims: We investigate from a theoretical perspective if space asteroseismology can be used to distinguish between different thermal structures and shapes of the near-core mixing pro…
Low-frequency gravity waves in blue supergiants revealed by high-precision space photometry
Dominic M. Bowman, Siemen Burssens, May G. Pedersen +14
Almost all massive stars explode as supernovae and form a black hole or neutron star. The remnant mass and the impact of the chemical yield on subsequent star formation and galacti…
Astro2020 Science White Paper: gravity-wave asteroseismology of intermediate- and high-mass stars
Andrew Tkachenko, Conny Aerts, Dominic M. Bowman +17
The evolution of a star is driven by the physical processes in its interior making the theory of stellar structure and evolution the most crucial ingredient for not only stellar ev…
Forward asteroseismic modeling of stars with a convective core from gravity-mode oscillations: parameter estimation and stellar model selection
C. Aerts, G. Molenberghs, M. Michielsen +13
We propose a methodological framework to perform forward asteroseismic modeling of stars with a convective core, based on gravity-mode oscillations. These probe the near-core regio…