Results 111 to 120 of about 1,989,293 (378)
White Dwarf Crystallization [PDF]
International Astronomical Union Colloquium, 1994 AbstractThe inclusion of a detailed treatment of solidification processes in the cooling theory of carbon–oxygen white dwarfs is of crucial importance for the determination of their luminosity function. Carbon–oxygen separation at crystallization yields delays larger than 2 Gyr to cool down to luminosities corresponding to the observed cut–off.
Enrique García-Berro, M. Hernanz
openaire +2 more sources
The Halo White Dwarf Population [PDF]
The Astrophysical Journal, 1998 29 pages (AASTeX), 7 eps figures included, accepted for publication in ...
Enrique García-Berro +4 more
openaire +3 more sources
Advanced Electronic Materials, EarlyView.The low‐frequency noise in organic bilayer ambipolar transistors is investigated, revealing a unique 1/f⁴ noise from correlated trapping/detrapping and generation/recombination processes. Inserting a thin parylene layer between the n/p junction effectively reduces this excess noise, suggesting a practical approach to enhanced device reliability in ...
Youngmin Han +4 more
wiley +1 more source
White Dwarf/M Dwarf Binaries as Single Degenerate Progenitors of Type Ia Supernovae
, 2012 Limits on the companions of white dwarfs in the single degenerate scenario for the origin of Type Ia supernovae (SNIa) have gotten increasingly tight. The only type of non-degenerate stars that survive the limits on the companions of SNIa in SNR 0509-67 ...
Andronov +73 more
core +1 more source
The binarity of the local white dwarf population [PDF]
, 2017 Context As endpoints of stellar evolution, white dwarfs (WDs) are powerful tools to study the evolutionary history of the Galaxy. In particular, the multiplicity of WDs contains information regarding the formation and evolution of binary systems ...
S. Toonen +6 more
semanticscholar +1 more source
Resistance Drift of Phase Change Materials Beyond the Power Law
Advanced Electronic Materials, EarlyView.The timedependent resistance of phase change materials is important for their application as electronic memory. Here, resistance measurements of melt‐quenched germanium telluride from nanoseconds to minutes are presented. By going far beyond the usually considered measurement regime, deviations from the ubiquitous power law behavior are observed, that ...
Jakob Ballmaier +2 more
wiley +1 more source
Orbital Decay in an Accreting and Eclipsing 13.7 Minute Orbital Period Binary with a Luminous Donor
The Astrophysical Journal Letters, 2023 We report the discovery of ZTF J0127+5258, a compact mass-transferring binary with an orbital period of 13.7 minutes. The system contains a white dwarf accretor, which likely originated as a post–common envelope carbon–oxygen (CO) white dwarf, and a warm
Kevin B. Burdge +26 more
doaj +1 more source
Discovery of an Ultracool White Dwarf Companion [PDF]
, 2004 The discovery of a low luminosity common proper motion companion to the white dwarf GD392 at a wide separation of $46''$ is reported. $BVRI$ photometry suggests a low temperature ($T_{\rm eff}\sim4000$ K) while $JHK$ data strongly indicate suppressed ...
J. Farihi +3 more
core +4 more sources
Testing the white dwarf mass-radius relationship with eclipsing binaries [PDF]
, 2017 We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass–radius relationship.
S. Parsons +19 more
semanticscholar +1 more source
Gaiaphotometry for white dwarfs [PDF]
Astronomy & Astrophysics, 2014 Context. White dwarfs can be used to study the structure and evolution of the Galaxy by analysing their luminosity function and initial mass function. Among them, the very cool white dwarfs provide the information for the early ages of each population.
Piotr M. Kowalski +8 more
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