National Aeronautics and Space Administration

Publication Abstracts

Tsuruta and Cameron 1970

Tsuruta, S., and A.G.W. Cameron, 1970: URCA shells in dense stellar interiors. Astrophys. Space Sci., 7, 374-406, doi:10.1007/BF00653278.

Thermal and vibrational energy losses due to URCA shells in stellar interiors are calculated. Analytic expressions are derived for semidegenerate, relativistic electrons. Results are given for more general cases calculated with a computer. The calculations are carried out for a large number of nuclei that may contribute to URCA energy losses in various stages of stellar evolution. An illustration is given of the cooling and vibrational damping of a white dwarf. For a central Fermi energy ≳ 5 MeV, the internal temperature of the star should be reduced to the order of 10⁶ K and the relative vibrational amplitude should be reduced to the order of 10^-5 on a time scale of 10⁹ yr. The URCA energy losses are compared with other neutrino energy losses. In a stellar interior where URCA shells are present, the URCA neutrino energy loss dominates in the temperature region up to about 2×10⁹ K.

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@article{ts09000a,
  author={Tsuruta, S. and Cameron, A. G. W.},
  title={URCA shells in dense stellar interiors},
  year={1970},
  journal={Astrophysics and Space Science},
  volume={7},
  pages={374--406},
  doi={10.1007/BF00653278},
}

TY  - JOUR
ID  - ts09000a
AU  - Tsuruta, S.
AU  - Cameron, A. G. W.
PY  - 1970
TI  - URCA shells in dense stellar interiors
JA  - Astrophys. Space Sci.
JO  - Astrophysics and Space Science
VL  - 7
SP  - 374
EP  - 406
DO  - 10.1007/BF00653278
ER  -

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