4 papers
White Dwarf Merger Remnants with Cooling Delays on the Q Branch Lack Strong Magnetism
Lou Baya Ould Rouis, J. J. Hermes, Joseph A. Guidry +8
A population of anomalous ultra-massive white dwarfs discovered with Gaia, often referred to as the Q branch, show high (multi-Gyr) cooling delays produced by exotic physical mecha…
Neural Posterior Estimation for White Dwarf Spectroscopic Characterization
Olivier Vincent, Patrick Dufour, Pierre Bergeron
White dwarf spectroscopic characterization is entering a big data era, with the number of spectroscopically characterized white dwarfs expected to grow from 100,000 to over 3…
An All-sky Survey of White Dwarf Merger Remnants: Far-UV is the Key
Mukremin Kilic, Pierre Bergeron, Warren R. Brown +5
The majority of merging white dwarfs leave behind a white dwarf remnant. Hot/warm DQ white dwarfs with carbon-rich atmospheres have high masses and unusual kinematics. All evidence…
Synthetic Spectroscopy for White Dwarf Classification: Addressing Label Uncertainty and Class Imbalance
Olivier Vincent, Pierre Bergeron, Patrick Dufour
With the imminent data releases from next-generation spectroscopic surveys, hundreds of thousands of white dwarf spectra are expected to become available within the next few years,…