Effects of rotation and thermohaline mixing in red giant stars

TL;DR

This paper investigates how rotation and thermohaline mixing influence the surface composition of red giant stars by modeling these processes and comparing predictions with recent observational data.

Contribution

It introduces stellar models that incorporate both thermohaline and rotational mixing, providing new insights into their combined effects on red giant star evolution.

Findings

Thermohaline mixing significantly alters surface abundances.

Rotation impacts the efficiency of mixing processes.

Models show good agreement with recent observations.

Abstract

Thermohaline mixing has been recently identified as the probable dominating process that governs the photospheric composition of low-mass bright giant stars. Here we present the predictions of stellar models computed with the code STAREVOL including this mechanism together with rotational mixing. We compare our theoretical predictions with recent observations.