Solar models with helioseismologically correct sound speed profile

Abstract

The problem of computation of the model of the present Sun with given sound speed profile in the solar radiative zone is considered. It is shown that the chemical composition is still a free parameter but the entropy of the adiabatic part of the convection zone is determined by this procedure. Parameters of the models are compared with the helioseismic calibration of solar envelope and the disagreement is revealed. A study of the seismic properties of the models' cores indicates that the best model is the one closest to the standard solar model.