Results 1 to 10 of about 1,877,533 (362)
EPJ Web of Conferences, 2017 The Sloan Digital Sky Survey has allowed us to increase the number of known white dwarfs by a factor of five and consequently the number of known pulsating white dwarfs also by a factor of five.
Kepler S.O., Romero Alejandra D.
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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
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Stark Broadening and White Dwarfs [PDF]
Open 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
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White dwarf cooling sequences and cosmochronology [PDF]
EPJ Web of Conferences, 2013 The evolution of white dwarfs is a simple gravothermal process. This means that their luminosity function, i.e. the number of white dwarfs per unit bolometric magnitude and unit volume as a function of bolometric magnitude, is a monotonically increasing ...
García-Berro E., Artigas A., Isern J.
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International Journal of Modern Physics: Conference Series, 2017 White dwarf stars are the final stage of most stars, born single or in multiple systems. We discuss the identification, magnetic fields, and mass distribution for white dwarfs detected from spectra obtained by the Sloan Digital Sky Survey up to Data Release 13 in 2016, which lead to the increase in the number of spectroscopically identified white ...
Gustavo Ourique +3 more
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Stellar equilibrium configurations of white dwarfs in the f(R, T) gravity [PDF]
European Physical Journal C: Particles and Fields, 2017 In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, namely, f(R, T) gravity, for which R and T stand for the Ricci scalar and trace of the energy-momentum tensor, respectively.
G. A. Carvalho +6 more
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White dwarfs and revelations [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We use the most recent, complete and independent measurements of masses and radii of white dwarfs in binaries to bound the class of non-trivial modified gravity theories, viable after GW170817/GRB170817, using its effect on the mass-radius relation of ...
I. Saltas, I. Sawicki, I. Lopes
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arXiv, 2011 The article covers the physical properties and evolution of single white dwarfs ranging in temperature from 20,000K to 200,000 and higher, the hottest know electron-degenerate stars. After discussing the classification of their spectra, the author reviews the known properties, parameters, evolutionary state, as well as persisting and new puzzles ...
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UBVR Photometry of white dwarfs and white dwarfs suspects [PDF]
Publications of the Astronomical Society of the Pacific, 1972 Photoelectric UBVr photometry is presented for 33 white-dwarf suspects from the Lowell Observatory lists. On the basis of (B- V) and (U- B) color indices, eight probable white dwarfs are identffied.
Richard D. Schwartz
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Snow White and the Seven Dwarfs: a fairytale for endocrinologists [PDF]
Endocrine Connections, 2021 ‘Snow White and the Seven Dwarfs’, a fairytale that is widely known across the Western world, was originally written by the Brothers Grimm, and published in 1812 as ‘Snow White’.
Athanasios Zervas +2 more
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