Current challenges in the physics of white dwarf stars

D Saumon, S Blouin, PE Tremblay - Physics Reports, 2022‏ - Elsevier
White dwarfs are a class of stars with unique physical properties. They present many
challenging problems whose solution requires advanced theories of dense matter, state-of …

Modules for experiments in stellar astrophysics (MESA): time-dependent convection, energy conservation, automatic differentiation, and infrastructure

AS Jermyn, EB Bauer, J Schwab… - The Astrophysical …, 2023‏ - iopscience.iop.org
We update the capabilities of the open-knowledge software instrument Modules for
Experiments in Stellar Astrophysics (MESA). The new auto _ diff module implements …

A catalogue of white dwarfs in Gaia EDR3

NP Gentile Fusillo, PE Tremblay… - Monthly Notices of …, 2021‏ - academic.oup.com
We present a catalogue of white dwarf candidates selected from Gaia Early Data Release 3
(EDR3). We applied several selection criteria in absolute magnitude, colour, and Gaia …

[HTML][HTML] The Gaia white dwarf revolution

PE Tremblay, A Bédard, MW O'Brien, J Munday… - New Astronomy …, 2024‏ - Elsevier
This review highlights the role of the Gaia space mission in transforming white dwarf
research. These stellar remnants constitute 5%–7% of the local stellar population in volume …

Buoyant crystals halt the cooling of white dwarf stars

A Bédard, S Blouin, S Cheng - Nature, 2024‏ - nature.com
White dwarfs are stellar remnants devoid of a nuclear energy source, gradually cooling over
billions of years, and eventually freezing into a solid state from the inside out,. Recently, it …

Skye: A differentiable equation of state

AS Jermyn, J Schwab, E Bauer… - The Astrophysical …, 2021‏ - iopscience.iop.org
Stellar evolution and numerical hydrodynamics simulations depend critically on access to
fast, accurate, thermodynamically consistent equations of state. We present Skye, a new …

Magnetic field breakout from white dwarf crystallization dynamos

D Blatman, S Ginzburg - Monthly Notices of the Royal …, 2024‏ - academic.oup.com
ABSTRACT A convective dynamo operating during the crystallization of white dwarfs is one
of the promising channels to produce their observed strong magnetic fields. Although the …

Carbon–oxygen phase separation in modules for experiments in stellar astrophysics (MESA) white dwarf models

EB Bauer - The Astrophysical Journal, 2023‏ - iopscience.iop.org
We enhance the treatment of crystallization for models of white dwarfs (WDs) in the stellar
evolution software Modules for Experiments in Stellar Astrophysics (MESA) by implementing …

Evolutionary models for the remnant of the merger of two carbon-oxygen core white dwarfs

J Schwab - The Astrophysical Journal, 2021‏ - iopscience.iop.org
We construct evolutionary models of the remnant of the merger of two carbon-oxygen (CO)
core white dwarfs (WDs). With total masses in the range 1–2 M⊙, these remnants may either …

22Ne phase separation as a solution to the ultramassive white dwarf cooling anomaly

S Blouin, J Daligault, D Saumon - The Astrophysical Journal …, 2021‏ - iopscience.iop.org
The precise astrometric measurements of the Gaia Data Release 2 have opened the door to
detailed tests of the predictions of white dwarf cooling models. Significant discrepancies …