Multiple stellar populations: from old Milky Way globulars to young star clusters

TL;DR

This paper reviews recent findings on multiple stellar populations in old Milky Way globular clusters and young star clusters, highlighting chemical properties and rotation rate differences across various systems.

Contribution

It provides a comprehensive overview of chemical and rotational diversity in stellar populations across different cluster ages and environments.

Findings

Chemical properties of GCs on the chromosome map

Presence of multiple populations with different rotation rates

Support for co-existing stellar populations in young clusters

Abstract

I present the latest results from our group about the multiple stellar populations in the old Milky Way globular clusters (GCs) and in the young systems both in the Magellanic Clouds and in the Milky Way. For the ancient GCs in our Galaxy I summarize the chemical properties of the stellar populations as observed on the chromosome map. Both Type I and Type II GCs are discussed. For the youngest clusters I will briefly report our latest spectroscopic analysis on the Large Magellanic Cloud cluster NGC1818 and the Galactic open cluster NGC6705 (M11), which supports the co-existence of stellar populations with different rotation rates.