324 citations · 612 across the 7 of their papers we have counts for
7 papers · 1 filter
A Crystallizing White Dwarf in a Sirius-Like Quadruple System
Alexander Venner, Simon Blouin, Antoine Bédard +1
The observational signature of core crystallization of white dwarfs has recently been discovered. However, the magnitude of the crystallization-powered cooling delay required to ma…
The Initial-Final Mass Relation for Hydrogen-Deficient White Dwarfs
Joseph W. Barnett, Kurtis A. Williams, A. Bédard +1
The initial-final mass relation (IFMR) represents the total mass lost by a star during the entirety of its evolution from the zero age main sequence to the white dwarf cooling trac…
On the Spectral Evolution of Hot White Dwarf Stars. I. A Detailed Model-Atmosphere Analysis of Hot White Dwarfs from SDSS DR12
A. Bédard, P. Bergeron, P. Brassard +1
As they evolve, white dwarfs undergo major changes in surface composition, a phenomenon known as spectral evolution. In particular, some stars enter the cooling sequence with heliu…
The Tau Association: A 60 Myr-Old Coeval Group at 150 pc from the Sun
Jonathan Gagné, Trevor J. David, Eric E. Mamajek +3
[Abbreviated] We present an analysis of the newly identified Tau Association (MUTA) of young stars at 150 pc from the Sun that is part of the large Cas-Tau structure, co…
Toward Precision Cosmochronology: A New C/O Phase Diagram for White Dwarfs
Simon Blouin, Jérôme Daligault, Didier Saumon +2
The continuous cooling of a white dwarf is punctuated by events that affect its cooling rate. Probably the most significant of those is the crystallization of its core, a phase tra…
Atmospheric Temperature Inversions and He I 5876 Core Profile Structure in White Dwarfs
Beth Klein, Simon Blouin, Diego Romani +7
We report distinctive core profiles in the strongest optical helium line, He I 5876, from high-resolution high-sensitivity observations of spectral type DB white dwarfs. By analyzi…