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Progress towards a unified equation of state

  • Part II Physical Processes in Modelling the Sun
  • Conference paper
  • First Online:
Book cover Progress of Seismology of the Sun and Stars

Part of the book series: Lecture Notes in Physics ((LNP,volume 367))

Abstract

A recent comparison of thermodynamical quantities, computed in the chemical and physical picture, has revealed a remarkable agreement in the hydrogen and helium ionization zones (on an isochore of log p = -5.5, with p in g cm−3). This agreement is due to an unexpectedly dominating (classical) Coulomb pressure term. The analogous comparison at a somewhat higher density (log p = −3.5) shows still striking similarities, despite the different treatment of bound states in the two formalisms. The results suggest use of a relatively simple parametrized equation of state for solar purposes.

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Author information

Authors and Affiliations

  1. Space Science Department of ESA, ESTEC, 2200AG, Noordwijk, The Netherlands

    Werner Däppen

  2. Institute for Theoretical Physics, University of California, 93106, Santa Barbara, CA, USA

    Werner Däppen

Authors
  1. Werner Däppen
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Editor information

Y. Osaki H. Shibahashi

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© 1990 Springer-Verlag

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Däppen, W. (1990). Progress towards a unified equation of state. In: Osaki, Y., Shibahashi, H. (eds) Progress of Seismology of the Sun and Stars. Lecture Notes in Physics, vol 367. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-53091-6_61

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  • DOI: https://doi.org/10.1007/3-540-53091-6_61

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-53091-6

  • Online ISBN: 978-3-540-46645-1

  • eBook Packages: Springer Book Archive

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