# Imprints of Evolution on the Internal Kinematics of Globular Clusters

## TL;DR

This paper investigates how the internal dynamics of globular clusters, such as velocity anisotropy and energy distribution, reveal their evolutionary history through analysis of Hubble Space Telescope proper motions.

## Contribution

It provides new insights into the internal kinematics of globular clusters by analyzing proper motion data to understand their evolution.

## Key findings

- Velocity anisotropy varies with cluster age and density.
- Energy equipartition is incomplete in most clusters.
- Proper motions reveal dynamical states of clusters.

## Abstract

Globular clusters are collisional systems, meaning that the stars inside them interact on timescales much shorter than the age of the Universe. These frequent interactions transfer energy between stars and set up observable trends that tell the story of a cluster's evolution. This contribution focuses on what we can learn by studying velocity anisotropy and energy equipartition in globular clusters with Hubble Space Telescope proper motions.