# MOCCA survey database I: preliminary mock Extra Galactic Globular Cluster observations

## TL;DR

This paper presents a preliminary analysis of the photometric properties of extragalactic globular clusters at different dynamical stages, using simulations from the MOCCA Survey Database and synthetic photometry.

## Contribution

It introduces a method to study EGGCs' photometric properties across dynamical stages using simulated data and synthetic magnitudes.

## Key findings

- Photometric properties vary with dynamical evolution stages.
- Half-light radii can be measured from surface brightness profiles.
- Simulations provide insights into the internal dynamical states of EGGCs.

## Abstract

The photometric properties that we could observe for Extra-Galactic Globular Clusters (EGGCs) are the integrated light of the system and for nearby EGGCs it also is possible to measure both half-light radii and the color spatial distribution, e.g. for areas smaller and larger than the half-light radius. No information about the internal dynamical state of the system could be directly obtained from observations. On the other hand, simulations of Globular Clusters (GCs) can provide detailed information about the dynamical evolution of the system. We present a preliminary study of EGGCs' photometric properties for different dynamical evolutionary stages. We apply this study to 12 Gyr old GCs simulated as part of the MOCCA Survey Database. We determine the magnitudes in different bands from their projected snapshots using the Flexible Stellar Population Synthesis (FSPS) code and we measure the half-light radii from the surface brightness.