34 citations · 57 across the 8 of their papers we have counts for
8 papers · 1 filter
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,…
Discovery of a Magnetic Double-Faced DBA White Dwarf
Adam Moss, P. Bergeron, Mukremin Kilic +4
We report the discovery of spectroscopic variations in the magnetic DBA white dwarf SDSS J091016.43+210554.2. Follow-up time-resolved spectroscopy at the Apache Point Observatory (…
Classification and parameterisation of a large Gaia sample of white dwarfs using XP spectra
O. Vincent, M. A. Barstow, S. Jordan +3
The latest Gaia data release in July 2022, DR3, added a number of important data products to those available in earlier releases, including radial velocity data, information on ste…
Data-Driven Selection and Spectral Classification of White Dwarf Stars
Olivier Vincent, Pierre Bergeron, Patrick Dufour
The next generation of spectroscopic surveys is expected to provide spectra for hundreds of thousands of white dwarf (WD) candidates in the upcoming years. Currently, spectroscopic…
Searching for ZZ Ceti White Dwarfs in the Gaia Survey
Olivier Vincent, Pierre Bergeron, David Lafrenière
The {\it Gaia} satellite recently released parallax measurements for 260,000 high-confidence white dwarf candidates, allowing for precise measurements of their physical param…