Results 21 to 30 of about 2,034,344 (399)
On the Spectral Evolution of Hot White Dwarf Stars. I. A Detailed Model Atmosphere Analysis of Hot White Dwarfs from SDSS DR12 [PDF]
Astrophysical Journal, 2020 As they evolve, white dwarfs undergo major changes in surface composition, a phenomenon known as spectral evolution. In particular, some stars enter the cooling sequence with helium atmospheres (type DO) but eventually develop hydrogen atmospheres (type ...
A. Bédard +3 more
semanticscholar +1 more source
The 100 pc White Dwarf Sample in the SDSS Footprint [PDF]
Astrophysical Journal, 2020 We present follow-up spectroscopy of 711 white dwarfs within 100 pc, and we present a detailed model atmosphere analysis of the 100 pc white dwarf sample in the Sloan Digital Sky Survey footprint.
M. Kilic +5 more
semanticscholar +1 more source
A Mini-Review of Accreting Pulsating White Dwarfs
Frontiers in Astronomy and Space Sciences, 2021 The discovery in 1998 of a pulsating white dwarf in the cataclysmic variable GW Lib opened up a new avenue of exploration in the asteroseismology of white dwarfs.
Paula Szkody
doaj +1 more source
A giant planet candidate transiting a white dwarf [PDF]
Nature, 2020 Astronomers have discovered thousands of planets outside the Solar System1, most of which orbit stars that will eventually evolve into red giants and then into white dwarfs.
A. Vanderburg +63 more
semanticscholar +1 more source
New Conductive Opacities for White Dwarf Envelopes [PDF]
Astrophysical Journal, 2020 Thanks to their continuous cooling and relative simplicity, white dwarf stars are routinely used to measure the ages of stellar populations. The usefulness of white dwarfs as cosmochronometers depends on the availability of accurate cooling models. A key
S. Blouin +3 more
semanticscholar +1 more source
The mass and radius of the M-dwarf in the short period eclipsing binary RR Caeli [PDF]
, 2007 We present new photometry and spectroscopy of the eclipsing white dwarf - M-dwarf binary star RR Cae. We use timings of the primary eclipse from white-light photo-electric photometry to derive a new ephemeris for the eclipses. We find no evidence for any
Maxted, P.F.L. +4 more
core +15 more sources
Proceedings of Supernovae: lights in the darkness — PoS(SUPERNOVA), 2008 Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact scenario leading to these explosions is still unclear. An important step to clarify this point is to understand the behaviour of accreting white dwarfs in close binary systems.
Hernanz, Margarita, José, Jordi
openaire +3 more sources
White-dwarf–white-dwarf galactic background in the LISA data [PDF]
Physical Review D, 2005 36 pages, 15 ...
Edlund, J. +3 more
openaire +5 more sources
Discovery of a hot ultramassive rapidly rotating DBA white dwarf [PDF]
, 2020 We report the discovery of a nearby massive white dwarf with He-H atmosphere. The white dwarf is located at a distance of $74.5\pm0.9$ pc. Its radius, mass, effective temperature, H/He ratio and age are $R=2500\pm100$ km, $M=1.33\pm0.01$ $\rm M_{\odot}$,
M. S. Pshirkov +12 more
semanticscholar +1 more source
The Astronomical Journal, 2023 Excess infrared flux from white dwarf stars is likely to arise from a dusty debris disk or a cool companion. In this work, we present near-infrared spectroscopic observations with Keck/MOSFIRE, Gemini/GNIRS, and Gemini/Flamingos-2 of seven white dwarfs ...
Dylan Owens +9 more
doaj +1 more source