Results 1 to 10 of about 85,254 (340)
Polluted white dwarfs reveal exotic mantle rock types on exoplanets in our solar neighborhood [PDF]
Nature Communications, 2021 While some exoplanets that once orbited Polluted white dwarfs are similar to Earth, most appear to have rock types that are exotic to our Solar System. We thus develop a new classification scheme to describe these new and novel lithologies that appear to
Keith D. Putirka, Siyi Xu
doaj +2 more sources
The Astrophysical JournalWe increase the spectroscopic completeness of the 100 pc white dwarf sample in the Sloan Digital Sky Survey footprint with 840 additional spectra. Our spectroscopy is 86% complete for white dwarfs hotter than T _eff = 5000 K, where H α remains visible ...
Mukremin Kilic +7 more
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Existence of Chandrasekhar's limit in generalized uncertainty white dwarfs. [PDF]
R Soc Open Sci, 2021 Mathew A, Nandy MK.
europepmc +2 more sources
Odessa Astronomical Publications, 2017 We shortly present intermidiate results of a survey for weak magnetic fields among degenerate stars (white dwarfs and hot subdwarf stars). Kilogauss upper limits of longitudinal magnetic fields are presented for several brightest DA white dwarfs and new ...
G. Valyavin +6 more
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The ZZ Ceti Instability Strip for the Most Massive White Dwarf Pulsators
The Astrophysical JournalWe present time-series photometry of 31 massive DA white dwarfs with M ≳ 0.9 M _⊙ within the ZZ Ceti instability strip from the Montreal White Dwarf Database 100 pc sample.
Gracyn Jewett +12 more
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Ultra-low-mass and small-radius white dwarfs made of heavy elements
Frontiers in Astronomy and Space Sciences, 2023 Seven possible ultra-low-mass and small-radius white dwarfs have been recently identified, with masses ranging from ∼0.02 M⊙ to ∼0.08 M⊙ and radii ranging from ∼ 4,270 km to 10670 km.
Cheng-Jun Xia +8 more
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The galactic population of white dwarfs [PDF]
, 2009 Original paper can be found at: http://www.iop.org/EJ/conf DOI: 10.1088/1742-6596/172/1/012004 [16th European White Dwarfs Workshop]The contribution of white dwarfs of the different Galactic populations to the stellar content of our Galaxy is only poorly
Alcock C Allsman R A Alves D R +10 more
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Isochrones and Luminosity Functions for Old White Dwarfs [PDF]
, 1999 Using a new grid of models of cooling white dwarfs, we calculate isochrones and luminosity functions in the Johnson-Kron/Cousins and HST filter sets for systems containing old white dwarfs.
Alessandro Chieffi +9 more
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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. +5 more
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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 +2 more
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