Results 61 to 70 of about 1,877,533 (362)
Symposium - International Astronomical Union, 1974 The effects of core crystallization and of convection in the envelope on the cooling of white dwarfs are reviewed. The case of a 0.6 M⊙ white dwarf composed of an oxygen core and a helium envelope is taken as example. Also the amount of hydrogen that a white dwarf can accrete before nuclear burning occurs is estimated and possible evolutionary ...
openaire +1 more source
Spectroscopic Identification of Cool White Dwarfs in the Solar Neighbourhood [PDF]
Astrophys.J. 643 (2006) 402-415, 2006 The New Luyten Two-Tenths catalog contains a large number of high-proper motion white dwarf candidates that remain to be spectroscopically confirmed. We present new spectroscopic observations as well as SDSS archival spectra of 49 white dwarf candidates which have been selected from the revised NLTT catalog of Salim & Gould 2003.
arxiv +1 more source
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
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
On the Spectral Evolution of Helium-atmosphere White Dwarfs Showing Traces of Hydrogen [PDF]
, 2018 We present a detailed spectroscopic analysis of 115 helium-line (DB) and 28 cool, He-rich hydrogen-line (DA) white dwarfs based on atmosphere fits to optical spectroscopy and photometry.
B. Rolland, P. Bergeron, G. Fontaine
semanticscholar +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
Near Surface Geophysics, Volume 20, Issue 6, Page 572-589, December 2022., 2022 ABSTRACT The detection of mineral deposits and their related geological structures is of great importance to the mining industry as structures (such as dykes and faults) can affect the safety, cost and efficiency of mining. With the goal of testing cost‐effective seismic methods for mineral exploration and mining, active and passive seismic experiments
Moyagabo K. Rapetsoa +8 more
wiley +1 more source
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
AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury
, 2022 Hepatology, EarlyView.
Robert J. Fontana +6 more
wiley +1 more source