# Post-AGB nebular studies

## TL;DR

This review summarizes recent progress in the study of nebulae around post-AGB stars, highlighting new classes of objects, the role of binary interactions, and implications for stellar evolution and dust formation.

## Contribution

It introduces newly discovered post-RGB stars formed through binary interactions and discusses their significance in understanding stellar evolution and nebular morphology.

## Key findings

- Discovery of post-RGB stars formed via binary interaction.
- Identification of aspherical post-AGB classes like Proto-Planetary Nebulae.
- Insights into dust evolution in harsh stellar environments.

## Abstract

This review presents the latest advances in the nebular studies of post-AGB objects. Post-AGB stars are great tools to test nucleosynthesis and evolution models for stars of low and intermediate masses, and the evolution of dust in harsh environment. I will present the newly discovered class of post-RGB stars, formed via binary interaction on the RGB. Binary systems can also lead to the formation of two class of aspherical post-AGB, the Proto-Planetary Nebulae and the naked post-AGBs (dusty RV Taus , a.k.a. Van Winckel's stars).