Results 61 to 70 of about 1,914,179 (372)
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
The DB gap and a new class of pulsating white dwarfs
EPJ Web of Conferences, 2013 The recent systematic surveys providing enormously massive datasets of white dwarfs show that there is still a deficit of a factor of 2.5 in the DA/non-DA ratio within the temperature range of 30 000 K < Teff < 45 000 K, which has been regarded as the ...
Shibahashi H.
doaj +1 more source
Luminosity and cooling suppression in magnetized white dwarfs [PDF]
, 2018 We investigate the luminosity and cooling of highly magnetized white dwarfs where cooling occurs by the diffusion of photons. We solve the magnetostatic equilibrium and photon diffusion equations to obtain the temperature and density profiles in the ...
Bhattacharya, Mukul +2 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
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
Infrared-excess white dwarfs in the Gaia 100 pc sample [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We analyse the 100 pc Gaia white dwarf volume-limited sample by means of VOSA (Virtual Observatory SED Analyser) with the aim of identifying candidates for displaying infrared excesses.
A. Rebassa-Mansergas +5 more
semanticscholar +1 more source
Imprint of the Crystallization of Binary White Dwarfs on Gravitational Wave Observations with LISA
Physical Sciences Forum, 2023 Space-based gravitational-wave detectors, such as the Laser Interferometer Space Antenna, allow for the probing of the interior of white dwarfs in binaries through the imprints of tidal effects on the gravitational wave signal.
Loïc Perot, Nicolas Chamel
doaj +1 more source
The True Incidence of Magnetism among Field White Dwarfs [PDF]
, 2002 We study the incidence of magnetism in white dwarfs from three large and well-observed samples of hot, cool, and nearby white dwarfs in order to test whether the fraction of magnetic degenerates is biased, and whether it varies with effective temperature,
Dreizler S. +7 more
core +4 more sources
Mass-accreting white dwarfs and type Ia supernovae [PDF]
, 2018 Type Ia supernovae (SNe Ia) play a prominent role in understanding the evolution of the Universe. They are thought to be thermonuclear explosions of mass-accreting carbon-oxygen white dwarfs (CO WDs) in binaries, although the mass donors of the accreting
Bo Wang
semanticscholar +1 more source
Open Astronomy, 2022 This article is a presentation of a project which is a statistical study of white dwarfs’ properties carried out based on the sample of the First Byurakan Survey Blue Stellar Objects (FBS BSOs) and the Catalogue of White Dwarfs.
Mickaelian Areg M. +4 more
doaj +1 more source