Helioseismic Test of the Equation of State and Inference of Element Abundances

Lead Investigator: A.G. Kosovichev

Other Team Members: W. Däppen, P. Giles, D.O. Gough, C.A. Iglesias, & F.J. Rogers

Determine the helium abundance in the convection zone and properties of the equation of state of the solar plasma in the HeII ionization zone by analysing mean mode frequencies and by modeling thermodynamic properties of the plasma.