White Dwarf Rotation as a Function of Mass and a Dichotomy of Mode Line Widths: Kepler Observations of 27 Pulsating DA White Dwarfs through K2 Campaign 8 [PDF]
, 2017 We present photometry and spectroscopy for 27 pulsating hydrogen-atmosphere white dwarfs (DAVs; a.k.a. ZZ Ceti stars) observed by the Kepler space telescope up to K2 Campaign 8, an extensive compilation of observations with unprecedented duration (>75 ...
J. Hermes +17 more
semanticscholar +1 more source
A Young Ultramassive White Dwarf in the AB Doradus Moving Group [PDF]
Astrophysical Journal, 2018 We use Gaia Data Release 2 (DR2) kinematic data and white dwarf evolutionary models to determine that the young and ultramassive 1.28 ± 0.08 M⊙ white dwarf GD 50 is a likely member of the AB Doradus moving group (ABDMG).
J. Gagn'e +3 more
semanticscholar +1 more source
Learning Crystallographic Disorder: Bridging Prediction and Experiment in Materials Discovery
Advanced Materials, EarlyView.Machine learning based computational materials discovery workflows have recently proposed thousands of potentially stable crystalline materials. However, the experimental realization of these predictions is often challenging because the models assume perfectly ordered structures.
Konstantin S. Jakob +3 more
wiley +1 more source
A wide binary trigger for white dwarf pollution
, 2015 Metal pollution in white dwarf atmospheres is likely to be a signature of remnant planetary systems. Most explanations for this pollution predict a sharp decrease in the number of polluted systems with white dwarf cooling age. Observations do not confirm
Bonsor, Amy, Veras, Dimitri
core +1 more source
Contribution of brown dwarfs and white dwarfs to recent microlensing observations and to the halo mass budget [PDF]
, 1996 We examine the recent results of the MACHO collaboration towards the Large Magellanic Cloud (Alcock et al. 1996) in terms of a halo brown dwarf or white dwarf population.
D. Méra +7 more
core +2 more sources
Current challenges in the physics of white dwarf stars [PDF]
Physics reports, 2022 D. Saumon, S. Blouin, P. Tremblay
semanticscholar +1 more source
Relativistic deflection of background starlight measures the mass of a nearby white dwarf star [PDF]
Science, 2017 General relativity weighs a white dwarf Light from a background star is deflected by the gravitational field of the Sun. This effect was used in 1919 to provide some of the first evidence for general relativity. Sahu et al. applied the concept to another
K. Sahu +14 more
semanticscholar +1 more source
Advanced Optical Materials, EarlyView.Lead‐free double perovskites are emerging alternatives to lead‐halide analogues, leveraging low toxicity and highly tunable chemical compositions. These materials possess unique carrier dynamics, often governed by self‐trapped exciton (STE)‐mediated recombination.
Joshua K. G. Karlsson +7 more
wiley +1 more source
White Dwarfs in Wide Binaries: The Strong Effects of Stellar Evolution and Mass Loss
The Astrophysical JournalWe examine the statistics of main-sequence/main-sequence, main-sequence/white-dwarf, and white-dwarf/white-dwarf wide binaries at 10 ^2.5 –10 ^4 au separations in Gaia data.
Hsiang-Chih Hwang, Nadia L. Zakamska
doaj +1 more source
A consistency test of white dwarf and main sequence ages: NGC 6791
EPJ Web of Conferences, 2013 NGC 6791 is an open cluster that it is so close to us that can be imaged down to very faint luminosities. The main sequence turn-off age (∼8 Gyr) and the age derived from the cut-off of the white dwarf luminosity function (∼6 Gyr) were found to be ...
Córsico A.H. +5 more
doaj +1 more source