Место издания:ASTRONOMICAL SOC PACIFIC, 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
Первая страница:11
Последняя страница:18
Аннотация:The current version of SARA-S (SAHA-S3), an equation of state (EOS) based on the chemical picture and which has been specifically proposed for the purpose of solar modeling, is discussed and proposed for public availability. All basic physical effects of the Coulomb interaction, exchange and diffraction effects, free electron degeneracy, relativistic corrections, and radiation pressure contributions are taken into account. The basic improvement in the presented version (SAHA-S3) is a detailed description of excited states of the ions of ten chemical elements. The physical assumptions in the EOS and main contributions to the Gamma(1)-profile along an adiabat (typical in solar conditions) are described. Distributions of ionic abundances and contributions of elements to the Gamma(1)-profile are plotted. The SAHA-S3 EOS is used in the calibration of the solar envelope and inversion of Gamma(1) in the solar convection zone.