Forging Neon-distilling White Dwarfs in the Stellar Engulfments of Helium White Dwarfs [PDF]
The Astrophysical JournalOnce carbon–oxygen white dwarfs cool sufficiently, they crystallize from the inside out. If the white dwarf is rich enough in ^22 Ne, these crystallized solids are buoyant and rapidly rise, efficiently liberating potential energy, which may halt the ...
Nicholas Z. Rui, Jim Fuller
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Magnetic white dwarfs in post-common-envelope binaries [PDF]
, 2021 Magnitude-limited samples have shown that 20-25 per cent of cataclysmic variables contain white dwarfs with magnetic fields of Mega Gauss strength, in stark contrast to the approximately 5 per cent of single white dwarfs with similar magnetic field ...
Gänsicke, B.T. +7 more
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DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission [PDF]
, 2011 We present a method which uses colour–colour cuts on the Sloan Digital Sky Survey (SDSS) photometry to select white dwarfs with hydrogen-rich (DA) atmospheres without the recourse to spectroscopy.
Farihi, J. +19 more
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Forever young white dwarfs: When stellar ageing stops [PDF]
, 2021 White dwarf stars are the most common end point of stellar evolution. The ultramassive white dwarfs are of special interest as they are related to type Ia supernovae explosions, merger events, and fast radio bursts. Ultramassive white dwarfs are expected
Santiago Torres +22 more
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Atmospheres of brown dwarfs [PDF]
, 2014 ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
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DETECTION OF A WHITE DWARF COMPANION TO THE WHITE DWARF SDSSJ125733.63+542850.5 [PDF]
The Astrophysical Journal, 2011 SDSSJ125733.63+542850.5 (hereafter SDSSJ1257+5428) is a compact white dwarf binary from the Sloan Digital Sky Survey that exhibits high-amplitude radial velocity variations on a period of 4.56 hours. While an initial analysis suggested the presence of a neutron star or black-hole binary companion, a follow-up study concluded that the spectrum was ...
Marsh, T. R. +6 more
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Magnetic dynamos in white dwarfs – III: explaining the occurrence of strong magnetic fields in close double white dwarfs [PDF]
, 2022 The origin of strong (∼>1MG) magnetic fields in white dwarfs has been a puzzle for decades. Recently, a dynamo mechanism operating in rapidly rotating and crystallizing white dwarfs has been suggested to explain the occurrence rates of strong magnetic ...
Zapata, Sarai +11 more
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ON THE EVOLUTION OF MAGNETIC WHITE DWARFS [PDF]
The Astrophysical Journal, 2015 We present the first radiation magnetohydrodynamics simulations of the atmosphere of white dwarf stars. We demonstrate that convective energy transfer is seriously impeded by magnetic fields when the plasma-beta parameter, the thermal to magnetic pressure ratio, becomes smaller than unity.
P.-E. Tremblay +7 more
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Enigmas from the Sloan Digital Sky Survey DR7 White Dwarf Catalog [PDF]
, 2021 We report results from a continuation of our searches for magnetic white dwarfs paired in a detached binary with a non-degenerate companion, using the Data Release 7 (DR7) of the Sloan Digital Sky Survey.
Liebert, James +3 more
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Simulation of the white dwarf–white dwarf galactic background in the LISA data [PDF]
Classical and Quantum Gravity, 2005 14 pages and 6 figures. Submitted to Classical and Quantum Gravity (Proceedings of GWDAW9)
Edlund, J. +3 more
openaire +4 more sources