Uncertainties in stellar evolution models: convective overshoot

TL;DR

This paper reviews how uncertainties in convective overshoot affect stellar evolution models, highlighting the importance of empirical calibration for interior mixing processes during key burning phases.

Contribution

It provides a comprehensive review of the impact of convective overshoot on stellar evolution, emphasizing the need for empirical calibration.

Findings

Convective overshoot significantly influences stellar evolution during main burning phases.

Uncertainties in overshoot parameters lead to variations in stellar model predictions.

Empirical calibration is crucial for accurate modeling of interior mixing processes.

Abstract

In spite of the great effort made in the last decades to improve our understanding of stellar evolution, significant uncertainties remain due to our poor knowledge of some complex physical processes that require an empirical calibration, such as the efficiency of the interior mixing related to convective overshoot. Here we review the impact of convective overshoot on the evolution of stars during the main Hydrogen and Helium burning phases.