Results 21 to 30 of about 1,877,533 (362)
Space Science Reviews, 2015 In this paper we review the current status of research on the observational and theoretical characteristics of isolated and binary magnetic white dwarfs (MWDs). Magnetic fields of isolated MWDs are observed to lie in the range 10^3-10^9G. While the upper limit cutoff appears to be real, the lower limit is more difficult to investigate. The incidence of
Lilia Ferrario +2 more
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White Dwarf and Pre-White Dwarf Pulsations [PDF]
AIP Conference Proceedings, 2009 In this review I describe the basic properties of white dwarfs and their pulsations. I then discuss some of the areas in which the pulsations can provide meaningful results, such as internal chemical profiles, possible emission of “exotic” particles, planet detection, crystallization, convection, accretion, and cosmochronology.
M. H. Montgomery +2 more
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Brown Dwarf Companions to White Dwarfs [PDF]
AIP Conference Proceedings, 2011 Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly reveal- ing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the ~ 0.05M* secondary, and new observations of GD 1400 which show that it too is a close, post-comon envelope system.
Matt R. Burleigh +13 more
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AGaiaData Release 2 catalogue of white dwarfs and a comparison with SDSS [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present a catalogue of white dwarf candidates selected from the second data release of Gaia (DR2). We used a sample of spectroscopically confirmed white dwarfs from the Sloan Digital Sky Survey (SDSS) to map the entire space spanned by these objects ...
N. G. Gentile Fusillo +13 more
semanticscholar +1 more source
Explosion of White Dwarfs [PDF]
International Astronomical Union Colloquium, 1987 AbstractWe present models for Type I supernova light curves based on the explosion of partially solid white dwarfs in close binary systems. Studies of such explosions show that they leave bound remnants of different size. Our results reproduce quite well the maximun luminosities, the expansion velocities and the shape of the light curve.
Jordi Isern +3 more
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White-dwarf–white-dwarf galactic background in the LISA data [PDF]
Physical Review D, 2005 36 pages, 15 ...
Edlund, J. +3 more
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Core crystallization and pile-up in the cooling sequence of evolving white dwarfs [PDF]
Nature, 2019 White dwarfs are stellar embers depleted of nuclear energy sources that cool over billions of years1. These stars, which are supported by electron degeneracy pressure, reach densities of 107 grams per cubic centimetre in their cores2.
P. Tremblay +9 more
semanticscholar +1 more source
Magnetism in white Dwarfs [PDF]
Symposium - International Astronomical Union, 1971 Searches have been made for the normal and quadratic Zeeman effect and broad-band circular polarization in white dwarf stars. A positive effect has been found in Grw + 70°8247 whose continuum shows both linear and circular polarization.
J. D. Landstreet, J. R. P. Angel
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Brain and Behavior, Volume 12, Issue 12, December 2022., 2022 Graphical Abstract Paired‐samples t‐tests showed that after exercise, subjects displayed increased reading speed and fewer eye drifts, coupled with increased mean scores. This study demonstrated that running, an acute, coordinative, aerobic exercise, improves attention and increases the testing performance of the SAT reading.
Jeffrey Huang +3 more
wiley +1 more source
On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era [PDF]
Astrophysical Journal, 2019 We present a critical review of the determination of fundamental parameters of white dwarfs discovered by the Gaia mission. We first reinterpret color–magnitude and color–color diagrams using photometric and spectroscopic information contained in the ...
P. Bergeron +7 more
semanticscholar +1 more source