Results 11 to 20 of about 5,024 (304)

Magnetic white dwarf stars [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1996
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Three aspects of magnetic white dwarf stars are studied to aid in the understanding of stellar evolution. A survey of ~ 50 DC white dwarf stars was conducted in circular spectropolarimetry to search for magnetic fields [...] 30 kG. Four
Putney, Angela
core   +3 more sources

An overview of white dwarf stars [PDF]

open access: yesEPJ Web of Conferences, 2013
We present a brief summary of what is currently known about white dwarf stars, with an emphasis on their evolutionary and internal properties. As is well known, white dwarfs represent the end products of stellar evolution for the vast majority of stars ...
Charpinet S.   +4 more
doaj   +2 more sources

ULTRACAM observations of two accreting white dwarf pulsators [PDF]

open access: yes, 2009
In this paper, we present high time-resolution observations of GW Librae (GW Lib) and SDSS J161033.64-010223.3 (SDSS 1610) - two cataclysmic variables which have shown periodic variations attributed to non-radial pulsations of the white dwarf (WD).
Southworth, J.   +15 more
core   +1 more source

The evolutionary state of short-period magnetic white dwarf binaries [PDF]

open access: yes, 2012
We present phase-resolved spectroscopy of two new short-period low accretion rate magnetic binaries, SDSS J125044.42+154957.3 (Porb= 86 min) and SDSS J151415.65+074446.5 (Porb= 89 min).
Marsh, Tom   +15 more
core   +1 more source

Cooling Process of White Dwarf Stars in Palatini f(R) Gravity

open access: yesUniverse, 2022
A simple cooling model of white dwarf stars is re-analyzed in Palatini f(R) gravity. Modified gravity affects the white dwarf structures and consequently their ages.
Surajit Kalita   +2 more
doaj   +1 more source

Axions and the Cooling of White Dwarf Stars [PDF]

open access: yesThe Astrophysical Journal, 2008
4 pages, 4 figures, replaced with version accepted by The Astrophysical Journal ...
Isern, J.   +3 more
openaire   +2 more sources

An Exploration of Spotted White Dwarfs from K2 [PDF]

open access: yes, 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 ...
Reding, Joshua S.   +2 more
core   +1 more source

Asteroseismology of pulsating DA white dwarfs with fully evolutionary models

open access: yesEPJ Web of Conferences, 2013
We present a new approach for asteroseismology of DA white dwarfs that consists in the employment of a large set of non-static, physically sound, fully evolutionary models representative of these stars.
Althaus L.G.   +3 more
doaj   +1 more source

Stark Broadening and White Dwarfs

open access: yesOpen 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.   +3 more
doaj   +1 more source

Evolutionary and Pulsational Properties of Ultra-massive White Dwarfs. The Role of Oxygen-Neon Phase Separation. [PDF]

open access: yes, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018Ultra-massive hydrogen-rich white dwarf stars are expected to harbour oxygen/neon cores resulting from semidegenerate carbon burning when the progenitor ...
De Geronimo, F.C.   +3 more
core   +1 more source

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