Results 31 to 40 of about 73,292 (294)

Double White Dwarf Merger Products among High-mass White Dwarfs [PDF]

The Astrophysical Journal, 2020
Abstract Double white dwarf (double-WD) binaries may merge within a Hubble time and produce high-mass WDs. Compared to other high-mass WDs, the double-WD merger products have higher velocity dispersion because they are older. With the power of Gaia data, we show strong evidence for double-WD merger products among high-mass WDs by ...
Sihao 浩 Cheng 程思, Jeffrey D. Cummings, Brice Ménard, Silvia Toonen   +3 more
openaire   +2 more sources

Forging Neon-distilling White Dwarfs in the Stellar Engulfments of Helium White Dwarfs

The Astrophysical Journal
Once 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
doaj   +1 more source

Effects of modified gravity on microscopic properties and cooling timescale of white dwarfs

Physics Letters B
There are currently two open questions in white dwarf physics: why are massive dwarfs observed less often in astronomical surveys, and why have not any super-Chandrasekhar white dwarfs been found despite the discovery of more than a dozen peculiar ...
Aneta Wojnar, Surajit Kalita, Lupamudra Sarmah   +2 more
doaj   +1 more source

Stark Broadening and White Dwarfs

Open Astronomy, 2011
White dwarf and pre-white dwarfs are the best types of stars for the application of Stark broadening research results in astrophysics, since in the atmospheres of these stars physical conditions are very favorable for this line broadening mechanism - in ...
Dimitrijević Milan S., Kovačević Andjelka, Simić Zoran, Sahal-Bréchot Sylvie   +3 more
doaj   +1 more source

DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate [PDF]

, 2015
Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which make it almost impossible to quantify to what extent the observational ...
A. Rebassa-Mansergas, Althaus, Althaus, Althaus, Althaus, Bastian, Boyle, Casagrande, Catalán, Chen, Cojocaru, Cui, D. Koester, De Gennaro, Deng, Diaz-Pinto, E. García-Berro, Felten, Ferrario, Fontaine, Frew, G. Li, García-Berro, García-Berro, García-Berro, García-Berro, Giammichele, Girven, Green, H.-B. Yuan, Hambly, Han, Han, Harris, Holberg, Holberg, Holmberg, Hu, Iben, Ishida, James, Jordi, Kepler, Kepler, Kilic, Kleinman, Koester, Koester, Koester, Kroupa, Krzesinski, Liebert, Limoges, Liu, Luo, Luo, M.-X. Xiang, Marsh, Martin, Meng, Mihalas, Morrissey, Nelemans, Noh, Phillips, Pietrinferni, R. Cojocaru, Rebassa-Mansergas, Rebassa-Mansergas, Rebassa-Mansergas, Rebassa-Mansergas, Rebassa-Mansergas, Ren, Ren, Renedo, Ritossa, Rowell, Rowell, S. Torres, Schmidt, Toonen, Torres, Torres, Tremblay, Tremblay, Vennes, Vennes, Verbeek, Wang, Weidemann, Weidemann, Winget, X.-W. Liu, Xiang, Y. Hou, Y. Huang, Y. Zhang, York, Yuan, Yuan, Zhang, Zhang, Zhang, Zhao, Zhao   +104 more
core   +3 more sources

Immune Checkpoint Inhibitor–Related Myositis and Associated Triad Overlap Syndrome

Arthritis Care &Research, EarlyView.
Objective Immune checkpoint inhibitor (ICI) myositis is a rare but a highly morbid condition, particularly with the ICI myositis triad syndrome of myositis, myocarditis, and myasthenia gravis. We report the clinical characteristics of ICI myositis and all‐cause mortality in these patients.
Selene Rubino, Grant W. Cannon, Brian C. Sauer, Jorge Rojas, Gregory J. Stoddard, Gary A. Kunkel, Jessica A. Walsh, Bryant R. England, Joshua F. Baker, Tawnie J. Braaten   +9 more
wiley   +1 more source

Recent Trends in Metabolomics by NMR Spectroscopy

Angewandte Chemie, EarlyView.
AI tools were applied to analyze more than 5 000 publications indexed in Scopus (2018–2025), identifying key trends and research directions in NMR‐based metabolomics. The artificial intelligence‐assisted workflow classified papers into six main fields of application, human health, food and nutrition, veterinary science, plants, environment, and ...
Giorgio Di Paco, Gaia Meoni, Veronica Ghini, Alessia Vignoli, Leonardo Tenori, Paola Turano, Claudio Luchinat   +6 more
wiley   +2 more sources

The Future is Now: the Formation of Single Low Mass White Dwarfs in the Solar Neighborhood [PDF]

, 2007
Low mass helium-core white dwarfs (M < 0.45 Msun) can be produced from interacting binary systems, and traditionally all of them have been attributed to this channel.
Duquennoy A., Edvardsson B., K. Z. Stanek, M. H. Pinsonneault, Marsh T. R., Marsh T. R., Mukremin Kilic, Weidemann V.   +7 more
core   +3 more sources

Integrating ZnO/Ag2O@g‐C3N4‐Based Nanocomposites Into a Carrageenan Matrix to Efficiently Remove Heavy Metals From Water

Advanced Materials Interfaces, EarlyView.
ABSTRACT This research focused on characterizing graphitic carbon nitride (g‐C3N4) nanocomposites incorporated with ZnO and Ag2O nanoparticles, and carrageenan to remove heavy metals. The ZnO/Ag2O@ g‐C3N4 and ZnO/Ag2O/g‐C3N4@Carr nanocomposites demonstrated thermal stability of 97.40% (108.81°C) and 82.80% (188.99°C) for TGA.
Feziwe B. Mamba, Bhekani S. Mbuli, James Ramontja   +2 more
wiley   +1 more source

Constraints from Parallaxes and Average Period Spacings in the Asteroseismic Study of Eight Hydrogen-atmosphere Pulsating White Dwarfs

The Astrophysical Journal
With space missions such as Kepler, TESS, and Gaia, we have a wealth of data on pulsating white dwarfs that can be leveraged in white dwarf asteroseismology. We address the question of the proportion of white dwarfs with thin hydrogen layers versus those
Agnès Bischoff-Kim, Keaton J. Bell
doaj   +1 more source