Core crystallization and pile-up in the cooling sequence of evolving white dwarfs

@article{Tremblay2019CoreCA,
  title={Core crystallization and pile-up in the cooling sequence of evolving white dwarfs},
  author={P. E. Tremblay and Gilles Fontaine and Nicola Pietro Gentile Fusillo and Bart H. Dunlap and Boris T. G{\"a}nsicke and Mark Andrew Hollands and J. J. Hermes and Thomas R. Marsh and Elena Cukanovaite and Tim Cunningham},
  journal={Nature},
  year={2019},
  volume={565},
  pages={202-205}
}
White dwarfs are stellar embers depleted of nuclear energy sources that cool over billions of years1. These stars, which are supported by electron degeneracy pressure, reach densities of 107 grams per cubic centimetre in their cores2. It has been predicted that a first-order phase transition occurs during white-dwarf cooling, leading to the crystallization of the non-degenerate carbon and oxygen ions in the core, which releases a considerable amount of latent heat and delays the cooling process… 
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