19 citations · 52 across the 14 of their papers we have counts for
12 papers · 1 filter
Benchmarking Machine Learning Emulators of Stellar Evolution for Precision Asteroseismology
Naomi Gluck, Earl P. Bellinger, Yan Liang +5
Fast and accurate stellar evolution emulators---surrogate models that approximate expensive simulation outputs with machine learning (ML)---are powerful tools for modern stellar ch…
Characterizing six seismic solar analogs observed by Kepler, K2, and HERMES
R. A. García, S. Mathur, G. T. Hookway +31
Solar analogs, stars that closely match the fundamental properties of the Sun, provide key benchmarks for testing stellar structure and evolution across different ages and activity…
Self-Consistent Nonlinear Classical Cepheid Pulsations During Stellar Evolution with MESA
Ebraheem Farag, Earl P. Bellinger, Philip Mocz +5
We extend the time-dependent convection treatment in \code{MESA} by introducing eddy-viscous damping. This software change brings \code{MESA-TDC} into closer alignment with the rad…
Red-Giant Asteroseismology of Low-Mass Population III Stars
Thiago Ferreira, Earl P. Bellinger, Ebraheem Farag +1
Low-mass stars from the first epoch of star formation may still persist in the Milky Way and its satellite dwarf galaxies today; however, their detection is confounded by surface p…
The Effect of Different Methods for Accounting for -enhancement on the Asteroseismic Modeling of Metal-Poor Stars
Christopher J. Lindsay, J. M. Joel Ong, Sarbani Basu +2
Constraining stellar models using asteroseismic and spectroscopic observations is a powerful method for precisely determining the fundamental properties of stars in different kinem…
Evolution of Low-Mass Population III Stars: Convection, Mass Loss, Nucleosynthesis, and Neutrinos
Thiago Ferreira, Earl P. Bellinger, Ebraheem Farag +1
The first stars likely formed from pristine clouds, marking a transformative epoch after the dark ages by initiating reionisation and synthesising the first heavy elements. Among t…
Precise Asteroseismic Ages for the Helmi Streams
Christopher J. Lindsay, Marc Hon, J. M. Joel Ong +6
The Helmi streams are remnants of a dwarf galaxy that was accreted by the Milky Way and whose stars now form a distinct kinematic and chemical substructure in the Galactic halo. Pr…
Acoustic modes in M67 cluster stars trace deepening convective envelopes
Claudia Reyes, Dennis Stello, Joel Ong +3
Acoustic oscillations in stars are sensitive to stellar interiors. Frequency differences between overtone modes -- large separations -- probe stellar density, while differences bet…
Resolving an Asteroseismic Catastrophe: Structural Diagnostics from p-mode Phase Functions off the Main Sequence
J. M. Joel Ong, Christopher J. Lindsay, Claudia Reyes +2
On the main sequence, the asteroseismic small frequency separation between radial and quadrupole p-modes is customarily interpreted to be a direct diagnostic of internal…
Fossil Signatures of Main-sequence Convective Core Overshoot Estimated through Asteroseismic Analyses
Christopher J. Lindsay, J. M. Joel Ong, Sarbani Basu
Some physical processes that occur during a star's main-sequence evolution also affect its post main-sequence evolution. It is well known that stars with masses above approximately…
Near-Core Acoustic Glitches are Not Oscillatory: Consequences for Asteroseismic Probes of Convective Boundary Mixing
Christopher J. Lindsay, J. M. Joel Ong, Sarbani Basu
Asteroseismology has been used extensively in recent years to study the interior structure and physical processes of main sequence stars. We consider prospects for using pressure m…
Mixed Mode Asteroseismology of Red Giant Stars Through the Luminosity Bump
Christopher J. Lindsay, J. M. Joel Ong, Sarbani Basu
Most current models of low mass red giant stars do not reproduce the observed position of the red giant branch luminosity bump, a diagnostic of the maximum extent of the convective…