Other
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..152g&link_type=abstract
17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 152-155 (2010).
Other
White Dwarfs, Stellar Evolution, Stellar Mass, Binary Stars, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Masses, X-Ray Binaries
Scientific paper
The evolution of white dwarfs can be understood as a cooling process, which is relatively well known at the moment. For this reason, white dwarfs in wide binaries are a powerful tool to constrain stellar ages, specially above 1 Gyr, since in this range other age determination methods show difficulties. Wide binary members are suposed to have been born simultaneously and with the same chemical composition, and since they are well separated (100-1000 AU aprox.) we can assume that no interaction has occured between them in the past. So, obtaining the age of the white dwarf will mean the determination of the age of the whole system. We have been able to infer the ages of a wide binary sample composed by pairs with a DA white dwarf and a low-mass companion. We are working in the description of the time evolution of high energy emissions of low-mass stars, so the age determination is a crucial factor for our final aim.
Catalan S.
Garcés A.
Ribas Ignasi
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