# Overshoot Inwards from the Bottom of the Intershell Convective Zone in (S)AGB stars

## TL;DR

This paper investigates the extent of inward overshooting in the intershell convective zone of (S)AGB stars during thermal pulses, concluding that buoyancy and temperature inversion strongly inhibit overshooting, implying other processes cause mixing.

## Contribution

The study provides a detailed estimation showing that buoyancy and temperature inversion prevent significant overshooting in (S)AGB stars, clarifying the nature of mixing in these regions.

## Key findings

- Overshooting is negligible due to strong buoyancy.
- Temperature inversion stabilizes the convective zone.
- Mixing is likely caused by processes other than overshooting.

## Abstract

We estimate the extent of overshooting inwards from the bottom of the intershell convective zone in thermal pulses in (S)AGB stars. We find that the buoyancy is so strong that any overshooting should be negligible. The temperature inversion at the bottom of the convective zone adds to the stability of the region. Any mixing that occurs in this region is highly unlikely to be due to convective overshooting, and so must be due to another process.