A two-stream formalism for the convective Urca process

  title={A two-stream formalism for the convective Urca process},
  author={Pierre Lesaffre and Philipp Podsiadlowski and Christopher A. Tout},
  journal={Monthly Notices of the Royal Astronomical Society},
We derive a new formalism for convective motions involving two radial flows. This formalism provides a framework for convective models that guarantees consistency for the chemistry and the energy budget in the flows, allows time dependence and accounts for the interaction of the convective motions with the global contraction or expansion of the star. In the one-stream limit, the formalism reproduces several existing convective models and allows them to treat the chemistry in the flows. We… 

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