Results 1 to 10 of about 11,481 (120)
Catalog of Magnetic White Dwarfs with Hydrogen Dominated Atmospheres
The Astrophysical Journal, 2023 White dwarfs are excellent research laboratories as they reach temperatures, pressures, and magnetic fields that are unattainable on Earth. To better understand how these three physical parameters interact with each other and with other stellar features,
L. L. Amorim +4 more
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The Astrophysical Journal, 2023 In the framework of our extensive modeling study of the spectral evolution of white dwarfs, we present here a new set of detailed calculations of the transport of residual hydrogen in helium-rich white dwarfs. First, we investigate the so-called float-up
A. Bédard, P. Bergeron, P. Brassard
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The Astrophysical Journal, 2023 Hot DA white dwarfs (DAWDs) have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are fully characterized by their effective temperature T _eff and surface gravity $\mathrm{log}\,g$ , which can
Tim Axelrod +16 more
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Asteroseismic Study of KUV03442+0719 with Parallax Constraints
The Astrophysical Journal, 2023 Hydrogen atmosphere white dwarf KUV03442+0719 was first reported as a pulsator by Gianninas et al. in 2006. Follow-up campaigns by Su et al. revealed more periods.
Agnes Bischoff-Kim
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The DB gap and a new class of pulsating white dwarfs
EPJ Web of Conferences, 2013 The recent systematic surveys providing enormously massive datasets of white dwarfs show that there is still a deficit of a factor of 2.5 in the DA/non-DA ratio within the temperature range of 30 000 K < Teff < 45 000 K, which has been regarded as the ...
Shibahashi H.
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O consumo da experiência na ficção seriada televisiva: Gilmore Girls e a cidade de Stars Hollow
Lumina, 2017 Neste artigo, analisamos a importância da cidade de Stars Hollow na experiência de consumo da série televisiva Gilmore Girls a partir de duas premissas. A primeira é que a pequena cidade fictícia localizada no estado de Connecticut se configura como uma ...
Mayka Castellano, Melina Meimaridis
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Faint White Dwarf Flux Standards: Data and Models
The Astronomical JournalFainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7.
Ralph C. Bohlin +9 more
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"The Visit" (2021), de Chimamanda Ngozi Adichie: feminismo literário e ficção especulativa
Ilha do Desterro, 2023 Bastante difundido nos Estados Unidos, o termo “ficção especulativa” indica uma extensa produção literária na qual conjunturas, tempos e espaços alternativos têm sido imaginados, resultando em um corpus literário rico de significados.
Cláudio R. V. Braga
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Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions
The Astronomical JournalWe present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with T _eff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M _⊙ , close to that ...
Peter A. Jałowiczor +18 more
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Asteroseismology of pulsating DA white dwarfs with fully evolutionary models
EPJ 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
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