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The effect of 22Ne diffusion in the evolution and pulsational properties of white dwarfs with solar metallicity progenitors

Author
Camisassa, M.; Althaus, L. G.; Corsico, A.; Vinyoles, N.; Serenelli, A.; Isem, J.; Miller, M.; Garcia-berro, E.
Type of activity
Journal article
Journal
Astrophysical journal
Date of publication
2016-06-01
Volume
823
Number
2
DOI
https://doi.org/10.3847/0004-637X/823/2/158 Open in new window
Repository
http://hdl.handle.net/2117/101446 Open in new window
URL
http://iopscience.iop.org/article/10.3847/0004-637X/823/2/158/meta Open in new window
Abstract
© 2016. The American Astronomical Society. All rights reserved. Because of the large neutron excess of 22Ne, sedimentation of this isotope occurs rapidly in the interior of white dwarfs. This process releases an additional amount of energy, thus delaying the cooling times of the white dwarf. This influences the ages of different stellar populations derived using white dwarf cosmochronology. Furthermore, the overabundance of 22Ne in the inner regions of the star modifies the Brunt-Väisälä fre...
Citation
Camisassa, M., Althaus, L. G., Corsico, A., Vinyoles, N., Serenelli, A., Isem, J., Miller, M., Garcia-berro, E. The effect of 22Ne diffusion in the evolution and pulsational properties of white dwarfs with solar metallicity prgenitors. "The Astrophysical Journal Letters", 1 Juny 2016, vol. 823, núm. 2.
Keywords
asteroseismology, dense matter, diffusion, stars: evolution, stars: interiors, white dwarfs
Group of research
GAA - Astronomy and Astrophysics Group

Participants

  • Camisassa, Maria E  (author)
  • Althaus, Leandro G.  (author)
  • Corsico, Alejandro H.  (author)
  • Vinyoles, Núria  (author)
  • Serenelli, Aldo M.  (author)
  • Isem, Jordi  (author)
  • Miller Bertolami, Marcelo M  (author)
  • Garcia-berro Montilla, Enrique  (author)

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