Probing the interior physics of stars through asteroseismology

C Aerts - Reviews of Modern Physics, 2021 - APS
Yearslong time series of high-precision brightness measurements have been assembled for
thousands of stars with telescopes operating in space. Such data have allowed astronomers …

Weighing stars from birth to death: mass determination methods across the HRD

A Serenelli, A Weiss, C Aerts, GC Angelou… - The Astronomy and …, 2021 - Springer
The mass of a star is the most fundamental parameter for its structure, evolution, and final
fate. It is particularly important for any kind of stellar archaeology and characterization of …

Probing the temperature gradient in the core boundary layer of stars with gravito-inertial modes-The case of KIC 7760680

M Michielsen, C Aerts, DM Bowman - Astronomy & Astrophysics, 2021 - aanda.org
Aims. We investigated the thermal and chemical structure in the near-core region of stars
with a convective core by means of gravito-inertial modes. We determined the probing …

The BAyesian STellar algorithm (BASTA): a fitting tool for stellar studies, asteroseismology, exoplanets, and Galactic archaeology

V Aguirre Børsen-Koch, JL Rørsted… - Monthly Notices of …, 2022 - academic.oup.com
We introduce the public version of the BAyesian STellar Algorithm (BASTA), an open-source
code written in Python to determine stellar properties based on a set of astrophysical …

Probing the physics in the core boundary layers of the double-lined B-type binary KIC 4930889 from its gravito-inertial modes

M Michielsen, T Van Reeth, A Tkachenko… - Astronomy & …, 2023 - aanda.org
Context. 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. This …

A grid of 200 000 models of young δ Scuti stars using mesa and GYRE

SJ Murphy, TR Bedding, A Gautam… - Monthly Notices of the …, 2023 - academic.oup.com
The rapidly increasing number of delta Scuti stars with regular patterns among their
pulsation frequencies necessitates modelling tools to better understand the observations …

High-precision abundances of elements in solar-type stars-Evidence of two distinct sequences in abundance-age relations

PE Nissen, J Christensen-Dalsgaard… - Astronomy & …, 2020 - aanda.org
Aims. Previous high-precision studies of abundances of elements in solar twin stars are
extended to a wider metallicity range to see how the trends of element ratios with stellar age …

Gaia gaps and the physics of low-mass stars. I. The fully convective boundary

GA Feiden, K Skidmore, WC Jao - The Astrophysical Journal, 2021 - iopscience.iop.org
The Gaia M-dwarf gap is a significant underdensity of stars observed near MG= 10.2 in a
color–magnitude diagram for stars within 200 pc of the Sun. It has been proposed that the …

Predictions for gravity-mode periods and surface abundances in intermediate-mass dwarfs from shear mixing and radiative levitation

JSG Mombarg, A Dotter, M Rieutord… - The Astrophysical …, 2022 - iopscience.iop.org
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 …

Chemical mixing in low mass stars-I. Rotation against atomic diffusion including radiative acceleration

M Deal, MJ Goupil, JP Marques, DR Reese… - Astronomy & …, 2020 - aanda.org
Context. When modelling stars with masses higher than 1.2 M⊙ with no observed chemical
peculiarity, atomic diffusion is often neglected because, on its own, it causes unrealistic …