Results 21 to 30 of about 85,254 (340)

Role of Quark Matter and Color Superconductivity in the Structure and Tidal Deformability of Strange Dwarfs

Universe, 2023
In 1995, Glendenning, Kettner and Weber postulated the existence of a new class of compact stars resembling white dwarfs but containing a small strange quark-matter core surrounded by hadronic layers attaining much higher densities than those found in ...
Loïc Perot, Nicolas Chamel
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

The Possible White Dwarf-Neutron Star Connection [PDF]

, 1997
The current status of the problem of whether neutron stars can form, in close binary systems, by accretion-induced collapse (AIC) of white dwarfs is examined. We find that, in principle, both initially cold C+O white dwarfs in the high-mass tail of their
C Ritossa, D García, E García-Berro, EPJ Heuvel van den, EPJ Heuvel van den, F Verbunt, FS Timmes, I Domínguez, I Domínguez, J Gutiérrez, J Gutiérrez, J Isern, J Isern, J Isern, K Nomoto, K Nomoto, M Hernanz, R Canal, R Canal, R Canal, R Canal, R Canal, R Canal, R Mochkovitch, R Mochkovitch, S Miyaji, S Miyaji, SE Woosley   +27 more
core   +2 more sources

Neural Network identification of halo white dwarfs [PDF]

, 1998
The white dwarf luminosity function has proven to be an excellent tool to study some properties of the galactic disk such as its age and the past history of the local star formation rate.
Garcia-Berro, Enrique, Isern, Jordi, Torres, Santiago   +2 more
core   +3 more sources

The Influence of Tidal Heating on the Habitability of Planets Orbiting White Dwarfs

The Astrophysical Journal Letters, 2023
In recent years, there have been a growing number of observations indicating the presence of rocky material in short-period orbits around white dwarfs. In this Letter, we revisit the prospects for habitability around these post-main-sequence star systems.
Juliette Becker, Darryl Z. Seligman, Fred C. Adams, Marshall J. Styczinski   +3 more
doaj   +1 more source

A White Dwarf Search Model Based on a Deep Transfer-learning Method

The Astrophysical Journal Supplement Series, 2023
White dwarfs represent the ultimate stage of evolution for over 97% of stars and play a crucial role in studies of the Milky Way’s structure and evolution.
Lei Tan, Zhicun Liu, Feng Wang, Ying Mei, Hui Deng, Chao Liu   +5 more
doaj   +1 more source

The search for ZZ Ceti stars in the original Kepler mission [PDF]

, 2016
We report the discovery of 42 white dwarfs in the original Kepler mission field, including nine new confirmed pulsating hydrogen-atmosphere white dwarfs (ZZ Ceti stars).
Bell, Keaton J., Breedt, E., Carter, P. J., Gaensicke, B. T., Greiss, S., Hermes, J. J., Koester, D., Raddi, R., Ramsay, G., Steeghs, D. T. H., Tremblay, P. -E., Vanderbosch, Z., Winget, D. E., Winget, K. I.   +13 more
core   +4 more sources

An Exploration of Spotted White Dwarfs from K2 [PDF]

, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018The Kepler K2 mission has discovered a significant population of white dwarf stars that exhibit photometric variability due to surface inhomogeneities ...
Clemens, J. Christopher, Hermes, J. J., Reding, Joshua S.   +2 more
core   +1 more source

Stellar equilibrium configurations of white dwarfs in the f(R, T) gravity

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, R. V. Lobato, P. H. R. S. Moraes, José D. V. Arbañil, E. Otoniel, R. M. Marinho, M. Malheiro   +6 more
doaj   +1 more source

Magnetic white dwarfs in the Early Data Release of the Sloan Digital Sky Survey [PDF]

, 2002
We have identified 7 new magnetic DA white dwarfs in the Early Data Release of the Sloan Digital Sky Survey. Our selection strategy has also recovered all the previously known magnetic white dwarfs contained in the SDSS EDR, KUV03292+0035 and HE0330-0002.
Euchner, F., Gaensicke, B. T., Jordan, S.   +2 more
core   +3 more sources