Interaction Between Convection and Pulsation

TL;DR

This review discusses current models of convection in pulsating stars, focusing on two main time-dependent formulations and their impact on stellar oscillation predictions and stability analyses.

Contribution

It compares two widely used convection models in one-dimensional stellar pulsation studies, highlighting their applications and effects on oscillation properties.

Findings

Convection dynamics influence oscillation frequencies.

Models affect pulsation mode stability.

Application to classical and solar-like pulsators.

Abstract

This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the convective turbulent velocity field couples with the global stellar oscillations. In this review we put emphasis on two, widely used, time-dependent convection formulations for estimating pulsation properties in one-dimensional stellar models. Applications to pulsating stars are presented with results for oscillation properties, such as the effects of convection dynamics on the oscillation frequencies, or the stability of pulsation modes, in classical pulsators and in stars supporting solar-type oscillations.