Evolutionary and pulsational properties of white dwarf stars
White dwarf stars are the final evolutionary stage of the vast majority of stars, including our Sun. The study of white dwarfs has potential applications to different fields of astrophysics. In particular, they can be used as independent reliable cosmic clocks, and can also provide valuable informat...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2010
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/123331 |
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I19-R120-10915-123331 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Stars: evolution Stars: white dwarfs Stars: interiors Stars: oscillations |
| spellingShingle |
Ciencias Astronómicas Stars: evolution Stars: white dwarfs Stars: interiors Stars: oscillations Althaus, Leandro Gabriel Córsico, Alejandro Hugo Isern, Jordi García Berro, Enrique Evolutionary and pulsational properties of white dwarf stars |
| topic_facet |
Ciencias Astronómicas Stars: evolution Stars: white dwarfs Stars: interiors Stars: oscillations |
| description |
White dwarf stars are the final evolutionary stage of the vast majority of stars, including our Sun. The study of white dwarfs has potential applications to different fields of astrophysics. In particular, they can be used as independent reliable cosmic clocks, and can also provide valuable information about the fundamental parameters of a wide variety of stellar populations, like our Galaxy and open and globular clusters. In addition, the high densities and temperatures characterizing white dwarfs allow to use these stars as cosmic laboratories for studying physical processes under extreme conditions that cannot be achieved in terrestrial laboratories. They can be used to constrain fundamental properties of elementary particles such as axions and neutrinos, and to study problems related to the variation of fundamental constants. ; In this work, we review the essentials of the physics of white dwarf stars. Special emphasis is placed on the physical processes that lead to the formation of white dwarfs as well as on the different energy sources and processes responsible for chemical abundance changes that occur along their evolution. Moreover, in the course of their lives, white dwarfs cross different pulsational instability strips. The existence of these instability strips provides astronomers with an unique opportunity to peer into their internal structure that would otherwise remain hidden from observers. We will show that this allows to measure with unprecedented precision the stellar masses and to infer their envelope thicknesses, to probe the core chemical stratification, and to detect rotation rates and magnetic fields. Consequently, in this work, we also review the pulsational properties of white dwarfs and the most recent applications of white dwarf asteroseismology. |
| format |
Articulo Articulo |
| author |
Althaus, Leandro Gabriel Córsico, Alejandro Hugo Isern, Jordi García Berro, Enrique |
| author_facet |
Althaus, Leandro Gabriel Córsico, Alejandro Hugo Isern, Jordi García Berro, Enrique |
| author_sort |
Althaus, Leandro Gabriel |
| title |
Evolutionary and pulsational properties of white dwarf stars |
| title_short |
Evolutionary and pulsational properties of white dwarf stars |
| title_full |
Evolutionary and pulsational properties of white dwarf stars |
| title_fullStr |
Evolutionary and pulsational properties of white dwarf stars |
| title_full_unstemmed |
Evolutionary and pulsational properties of white dwarf stars |
| title_sort |
evolutionary and pulsational properties of white dwarf stars |
| publishDate |
2010 |
| url |
http://sedici.unlp.edu.ar/handle/10915/123331 |
| work_keys_str_mv |
AT althausleandrogabriel evolutionaryandpulsationalpropertiesofwhitedwarfstars AT corsicoalejandrohugo evolutionaryandpulsationalpropertiesofwhitedwarfstars AT isernjordi evolutionaryandpulsationalpropertiesofwhitedwarfstars AT garciaberroenrique evolutionaryandpulsationalpropertiesofwhitedwarfstars |
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Repositorios |
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1764820449327316992 |