Results 41 to 50 of about 83,891 (346)
A population synthesis study of the luminosity function of hot white dwarfs
, 2014 We present a coherent and detailed Monte Carlo simulation of the population of hot white dwarfs. We assess the statistical significance of the hot end of the white dwarf luminosity function and the role played by the bolometric corrections of hydrogen ...
García-Berro, E. +3 more
core +1 more source
The Temperatures of White Dwarfs in Dwarf Novae [PDF]
International Astronomical Union Colloquium, 1996 AbstractWe attempt to measure the temperature of all the quiescent dwarf novae that have been observed with IUE, by fitting the observed flux distribution of white dwarfs (WDs) with known temperatures. This approach gives results similar to those using much more sophisticated modelling, but allows us to investigate the relationship with system ...
C. La Dous, B. J. M. Hassall
openaire +2 more sources
Cold giant planets evaporated by hot white dwarfs [PDF]
, 2019 Atmospheric escape from close-in Neptunes and hot Jupiters around Sun-like stars driven by extreme ultraviolet (EUV) irradiation plays an important role in the evolution of exoplanets and in shaping their ensemble properties.
Gaensicke, B. T. +4 more
core +2 more sources
Hot white dwarfs and pre-white dwarfs discovered with SALT
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The Southern African Large Telescope survey of helium-rich hot subdwarfs aims to explore evolutionary pathways among groups of highly evolved stars. The selection criteria mean that several hot white dwarfs and related objects have also been included.
C S Jeffery +5 more
openaire +3 more sources
An Exploration of Spotted White Dwarfs from K2 [PDF]
, 2018 The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018The Kepler K2 mission has discovered a significant population of white dwarf stars that exhibit photometric variability due to surface inhomogeneities ...
Clemens, J. Christopher +2 more
core +1 more source
Effects of modified gravity on microscopic properties and cooling timescale of white dwarfs
Physics Letters BThere are currently two open questions in white dwarf physics: why are massive dwarfs observed less often in astronomical surveys, and why have not any super-Chandrasekhar white dwarfs been found despite the discovery of more than a dozen peculiar ...
Aneta Wojnar +2 more
doaj +1 more source
White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 14 [PDF]
, 2019 White dwarfs carry information on the structure and evolution of the Galaxy, especially through their luminosity function and initial-to-final mass relation. Very cool white dwarfs provide insight into the early ages of each population.
Amaral, Larissa A. +8 more
core +2 more sources
A Comprehensive Spectroscopic Analysis of DB White Dwarfs [PDF]
, 2011 We present a detailed analysis of 108 helium-line (DB) white dwarfs based on model atmosphere fits to high signal-to-noise optical spectroscopy. We derive a mean mass of 0.67 Mo for our sample, with a dispersion of only 0.09 Mo. White dwarfs also showing
A. Beauchamp +51 more
core +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
The Astrophysical JournalWith space missions such as Kepler, TESS, and Gaia, we have a wealth of data on pulsating white dwarfs that can be leveraged in white dwarf asteroseismology. We address the question of the proportion of white dwarfs with thin hydrogen layers versus those
Agnès Bischoff-Kim, Keaton J. Bell
doaj +1 more source