Navegação por Assunto "White dwarf"
Resultados 1-5 de 5
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Asteroseismology of pulsating low-mass white dwarf stars
(2024) [Tese]White dwarf stars are the most common final stage of stellar evolution, corresponding to 99% of all stars in the Galaxy. Around 10% of white dwarfs in the solar neighbourhood are low-mass (< 0.45M⊙) objects. In the case ... -
Evolutionary sequences for H and He atmosphere massive white dwarf stars
(2018) [Dissertação]White dwarf stars are the most common final stage of stellar evolution, corresponding to 99% of all stars in the Galaxy. White dwarf models can be used to obtain the age of stellar populations, to build an initial to final ... -
Ground-based observation of ZZ Ceti stars and the discovery of four new variables
(2019) [Artigo de periódico]We perform ground-based photometric observations of 22 DA white dwarf stars, 10 already known ZZ Cetis and 12 candidates with atmospheric parameters inside the classical instability strip. We report on the discovery of ... -
On the evolutionary status and pulsations of the recently discovered blue large-amplitude pulsators (BLAPs)
(2018) [Artigo de periódico]The blue large-amplitude pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of ~30 000K and surface gravities of log g ~ 4.9, that pulsate with periods in the range ... -
Study of cool white dwarf stars
(2019) [Dissertação]White dwarfs stars are the evolutionary endpoint for at least 97% of all stars in the Milky Way. Being the most common stellar fossil, they could be studied as a proxy for Galactic formation and evolution. White dwarfs ...