This paper presents a theoretical framework to quantify the impact of equation of state uncertainties on thermodynamic curvature within surface convection zones of late-type stars, establishing a connection between microscopic physics uncertainties and macroscopic structural curvature.
Key findings
EOS uncertainties directly influence the thermal structure and dynamical properties of surface convection zones.
Curvature-EOS relations reveal characteristic signatures of helium abundance uncertainties and ionization state modeling errors.
Theoretical predictions are validated against helioseismic constraints.
EOS uncertainties propagate through stellar structure equations, affecting stellar age and mass determinations.
Limitations & open questions
The study focuses on late-type stars and may not be directly applicable to other star types.
Assumptions in treating Coulomb interactions and pressure ionization may limit the accuracy of EOS tables.