Skip to main content
SpringerLink
Log in

Application of SAHA-S EOS to solar modeling

  • Original Article
  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

State-of-the-art perspectives of the equation of state (EOS) are considered in view of applications to stellar and solar modeling. While the present-day OPAL EOS is the best-known version of EOS, here we discuss the SAHA-S EOS as an alternative. We assume that the accuracy of the EOS is determined by an adequate description of the ionization of a number of chemical components. To get an adequate description of the ionization, one needs an extensive amount of ion levels, an appropriately truncated partition function, such as the Planck–Larkin function, and a high-level approximation to the Coulomb correction. The current version of the SAHA-S EOS includes an extended set of elements. It provides an accurate profile of the adiabatic exponent in the solar convection zone, which is then compared to a result of a helioseismic inversion.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Ayukov, S.V., Baturin, V.A.: In these proceedings (2009)

  • Ayukov, S.V., Baturin, V.A., Gryaznov, V.K., Iosilevskiy, I.L., Starostin, A.N., Fortov, V.E.: JETP Lett. 80, 141 (2004)

    Article  ADS  Google Scholar 

  • Baturin, V.A.: In: R.J. Stancliffe, J. Dewi, G. Houdek, R.G. Martin, C.A. Tout (eds.) Unsolved Problems in Stellar Physics, AIP Conference Proceedings, vol. 948, p. 213. New York (2007)

  • Gryaznov, V.K., Ayukov, S.V., Baturin, V.A., Iosilevskiy, I.L., Starostin, A.N., Fortov, V.E.: In: V. Celebonovic, W. Dappen, D. Gough (eds.) Equation-of-State and Phase-Transition Issues in Models of Ordinary Astrophysical Matter, AIP Conference Proceedings, vol. 731, p. 147. New York (2004)

  • Gryaznov, V.K., Ayukov, S.V., Baturin, V.A., Iosilevskiy, I.L., Starostin, A.N., Fortov, V.E.: J. Phys., A, Math. General 39, 4459 (2006)

    Article  ADS  Google Scholar 

  • Rogers, F.J., Swenson, F.J., Iglesias, C.A.: Astrophys. J. 456, 902 (1996)

    Article  ADS  Google Scholar 

  • Vorontsov, S.V.: In: V. Celebonovic, W. Dappen, D. Gough (eds.) Equation-of-State and Phase-Transition Issues in Models of Ordinary Astrophysical Matter, AIP Conference Proceedings, vol. 731, p. 47. New York (2004)

Download references

Author information

Authors and Affiliations

  1. Sternberg Astronomical Institute, Moscow, Russia

    Vladimir A. Baturin

Authors
  1. Vladimir A. Baturin
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Vladimir A. Baturin.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Baturin, V.A. Application of SAHA-S EOS to solar modeling. Astrophys Space Sci 328, 147–151 (2010). https://doi.org/10.1007/s10509-009-0200-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10509-009-0200-x

Search

Navigation