Recent Advances in Modeling Stellar Interiors

TL;DR

This paper reviews recent progress in modeling stellar interiors, emphasizing new data, physics updates, advanced simulations, and asteroseismology, while highlighting unresolved challenges like pulsation mechanisms and stellar eruptions.

Contribution

It provides a comprehensive overview of recent advances in stellar interior modeling, integrating observational data, physics improvements, and computational methods.

Findings

Enhanced input physics for stellar models

Progress in multi-dimensional stellar simulations

Insights from asteroseismology validating models

Abstract

Advances in stellar interior modeling are being driven by new data from large-scale surveys and high-precision photometric and spectroscopic observations. Here we focus on single stars in normal evolutionary phases; we will not discuss the many advances in modeling star formation, interacting binaries, supernovae, or neutron stars. We review briefly: 1) updates to input physics of stellar models; 2) progress in two and three-dimensional evolution and hydrodynamic models; 3) insights from oscillation data used to infer stellar interior structure and validate model predictions (asteroseismology). We close by highlighting a few outstanding problems, e.g., the driving mechanisms for hybrid gamma Dor/delta Sct star pulsations, the cause of giant eruptions seen in luminous blue variables such as eta Car and P Cyg, and the solar abundance problem.