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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Analysis of cool DO-type white dwarfs from the Sloan Digital Sky Survey Data Release 10 [PDF]
, 2014 We report on the identification of 22 new cool DO-type white dwarfs (WD) detected in Data Release 10 (DR10) of the Sloan Digital Sky Survey (SDSS). Among them, we found one more member of the so-called hot-wind DO WDs, which show ultrahigh excitation ...
Fusillo, N. P. Gentile +5 more
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Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements [PDF]
, 2000 A photometric and spectroscopic analysis of 152 cool white dwarf stars is presented. The discovery of 7 new DA white dwarfs, 2 new DQ white dwarfs, 1 new magnetic white dwarf, and 3 weak magnetic white dwarf candidates, is reported, as well as 19 known ...
Borysow A. +9 more
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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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Origin of the DA and non-DA white dwarf stars [PDF]
International Astronomical Union Colloquium, 1989 Understanding the origin of DA and non-DA stars — the bifurcation of the white dwarf cooling sequence — is one of oldest and perniciously difficult problems in the white dwarf research field. Processes which could play a role have been discussed for years. For example, the idea of diffusive element separation was suggested by Schatzman (1958).
openaire +1 more source
New ZZ Ceti stars from the LAMOST survey [PDF]
, 2017 The spectroscopic sky survey carried out by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) provides the largest stellar spectra library in the world until now. A large number of new DA white dwarfs had been identified based on the
Ana Pantin (4258687) +6 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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Using the Ca II Triplet to Trace Abundance Variations in Individual Red Giant Branch stars in Three Nearby Galaxies [PDF]
, 2001 Spectroscopic abundance determinations for stars spanning a Hubble time in age are necessary in order to unambiguously determine the evolutionary histories of galaxies. Using FORS1 in Multi-Object Spectroscopy mode on ANTU (UT1) at the ESO-VLT on Paranal
Cole, Andrew A. +5 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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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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