Results 21 to 30 of about 73,128 (295)

The White Dwarfs within 25 Parsecs of the Sun: Kinematics and Spectroscopic Subtypes [PDF]

, 2014
We present the fractional distribution of spectroscopic subtypes, range and distribution of surface temperatures, and kinematical properties of the white dwarfs within 25pc of the sun.
Holberg, J. B., McCook, G. P., Myszka, J., Oswalt, T. D., Sion, E. M., Wasatonic, R.   +5 more
core   +4 more sources

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

White dwarfs and Galactic dark matter [PDF]

, 2002
We discuss the recent discovery by Oppenheimer et al (2001) of old, cool white dwarf stars, which may be the first direct detection of Galactic halo dark matter.
Flynn, Chris, Holmberg, Johan, Holopainen, Janne   +2 more
core   +3 more sources

Accreting White Dwarfs

, 2022
48 pages, 6 figures, Invited (and accepted) chapter for the Handbook of X-ray and Gamma-ray Astrophysics, Editors: Cosimo Bambi, Andrea ...
openaire   +2 more sources

White Dwarf and Pre-White Dwarf Oscillations [PDF]

International Astronomical Union Colloquium, 1993
AbstractCompact stars that result from extreme mass loss on the asymptotic giant branch and planetary nebula formation are observed to pulsate in a very large surface effective temperature range as they cool to become the classical white dwarfs. The hottest and most luminous of these display periods in excess of 1000 seconds because they are large, but
openaire   +1 more source

Luminosity and cooling suppression in magnetized white dwarfs [PDF]

, 2018
We investigate the luminosity and cooling of highly magnetized white dwarfs where cooling occurs by the diffusion of photons. We solve the magnetostatic equilibrium and photon diffusion equations to obtain the temperature and density profiles in the ...
Bhattacharya, Mukul, Mukerjee, Subroto, Mukhopadhyay, Banibrata   +2 more
core   +2 more sources

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

The True Incidence of Magnetism among Field White Dwarfs [PDF]

, 2002
We study the incidence of magnetism in white dwarfs from three large and well-observed samples of hot, cool, and nearby white dwarfs in order to test whether the fraction of magnetic degenerates is biased, and whether it varies with effective temperature,
Dreizler S., J. B. Holberg, James Liebert, Liebert J., Marsh M. C., P. Bergeron, Reimers D., Wickramasinghe D. T.   +7 more
core   +4 more sources

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