28 citations · 97 across the 8 of their papers we have counts for
8 papers
Accretion Rates and Thermohaline Convection in Polluted White Dwarfs
J. R. Fuentes, Matias Castro-Tapia, Jim Fuller +1
The atmospheres of polluted white dwarfs have information about the composition of disrupted planetary material. However, interpreting the observed abundances requires a quantitati…
Evolution of a Long-Lived Deep-Seated Main-Sequence Magnetic Field During White Dwarf Cooling
Matias Castro-Tapia, Maria Camisassa, Shu Zhang
We study the evolution of white dwarf (WD) magnetic fields that originate from core-convective dynamos during the main-sequence. Using stellar evolution and WD cooling models combi…
Three-component Phase Separation for Ultramassive White Dwarf Models
Matias Castro-Tapia, Andrew Cumming
We investigate phase separation in oxygen-neon (O/Ne) ultramassive white dwarfs (UMWDs). Current stellar evolution codes, such as MESA, only account for s…
Magnetic field evolution for crystallization-driven dynamos in C/O white dwarfs
Matias Castro-Tapia, Shu Zhang, Andrew Cumming
We investigate the evolution of magnetic fields generated by the crystallization-driven dynamo in carbon-oxygen white dwarfs (WDs) with masses . We use sca…
A Short Intense Dynamo at the Onset of Crystallization in White Dwarfs
J. R. Fuentes, Matias Castro-Tapia, Andrew Cumming
The origin of large magnetic fields () in isolated white dwarfs is not clear. One possible explanation is that crystallization of the star's core drives co…
Fast and Slow Crystallization-driven Convection in White Dwarfs
Matias Castro-Tapia, Andrew Cumming, J. R. Fuentes
We investigate crystallization-driven convection in carbon-oxygen white dwarfs. We present a version of the mixing length theory (MLT) that self-consistently includes the effects o…
Are Lithium-Rich Giants Binaries? A Radial Velocity Variability Analysis of 1,400 Giants
Matias Castro-Tapia, Claudia Aguilera-Gómez, Julio Chanamé
Low-mass giants with large amounts of lithium (Li) have challenged stellar evolution for decades. One of the possibilities usually discussed to explain them involves the interactio…
Heat transport and convective velocities in compositionally-driven convection in neutron star and white dwarf interiors
J. R. Fuentes, A. Cumming, M. Castro-Tapia +1
We investigate heat transport associated with compositionally-driven convection driven by crystallization at the ocean-crust interface in accreting neutron stars, or growth of the…