Results 1 to 10 of about 1,914,030 (228)
EPJ Web of Conferences, 2017 The Sloan Digital Sky Survey has allowed us to increase the number of known white dwarfs by a factor of five and consequently the number of known pulsating white dwarfs also by a factor of five.
Kepler S.O., Romero Alejandra D.
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Polluted white dwarfs reveal exotic mantle rock types on exoplanets in our solar neighborhood [PDF]
Nature Communications, 2021 While some exoplanets that once orbited Polluted white dwarfs are similar to Earth, most appear to have rock types that are exotic to our Solar System. We thus develop a new classification scheme to describe these new and novel lithologies that appear to
Keith D. Putirka, Siyi Xu
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Stellar equilibrium configurations of white dwarfs in the f(R, T) gravity [PDF]
European Physical Journal C: Particles and Fields, 2017 In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, namely, f(R, T) gravity, for which R and T stand for the Ricci scalar and trace of the energy-momentum tensor, respectively.
G. A. Carvalho +6 more
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Cold giant planets evaporated by hot white dwarfs [PDF]
Astrophysical Journal, 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 +4 more sources
Snow White and the Seven Dwarfs: a fairytale for endocrinologists [PDF]
Endocrine Connections, 2021 ‘Snow White and the Seven Dwarfs’, a fairytale that is widely known across the Western world, was originally written by the Brothers Grimm, and published in 1812 as ‘Snow White’.
Athanasios Zervas +2 more
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The effect of $^{22}$Ne diffusion in the evolution and pulsational properties of white dwarfs with solar metallicity progenitors [PDF]
, 2016 Because of the large neutron excess of $^{22}$Ne, this isotope rapidly sediments in the interior of the white dwarfs. This process releases an additional amount of energy, thus delaying the cooling times of the white dwarf.
a--Berro, Enrique Garcí +7 more
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A catalogue of white dwarfs in Gaia EDR3 [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present a catalogue of white dwarf candidates selected from Gaia early data release three (EDR3). We applied several selection criteria in absolute magnitude, colour, and Gaia quality flags to remove objects with unreliable measurements while ...
N. G. Fusillo +9 more
semanticscholar +1 more source
Improved treatment of dark matter capture in white dwarfs [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 White dwarfs, the most abundant stellar remnants, provide a promising means of probing dark matter interactions, complimentary to terrestrial searches. The scattering of dark matter from stellar constituents leads to gravitational capture, with important
N. Bell +4 more
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The origin and evolution of magnetic white dwarfs in close binary stars [PDF]
Nature Astronomy, 2021 The origin of magnetic fields in white dwarfs remains a fundamental unresolved problem in stellar astrophysics. In particular, the very different fractions of strongly (more than about a megagauss) magnetic white dwarfs in evolutionarily linked ...
M. Schreiber +4 more
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On the Spectral Evolution of Hot White Dwarf Stars. I. A Detailed Model Atmosphere Analysis of Hot White Dwarfs from SDSS DR12 [PDF]
Astrophysical Journal, 2020 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 helium atmospheres (type DO) but eventually develop hydrogen atmospheres (type ...
A. Bédard +3 more
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