Multiple populations in Galactic globular clusters: a survey in the Str\"omgren system

TL;DR

This paper reports on a survey using the Strömgren photometric system to identify and analyze multiple stellar populations within Galactic globular clusters, challenging the previous notion of their simplicity.

Contribution

It introduces a novel survey approach employing Strömgren photometry to detect and study multiple populations in globular clusters.

Findings

Evidence of multiple populations in globular clusters.

Method for photometric separation of populations.

Characterization of radial distributions.

Abstract

We are coming to believe that stellar populations in globular clusters are not as simple as they were once thought to be. A growing amount of photometric and spectroscopic evidence shows that globular clusters host at least two different stellar populations. In our contribution to these proceedings we present the first results of a survey we are conducting to look for the presence of multiple populations in a significant number of Galactic globular clusters, using the Str\"omgren system. We intend to photometrically separate these populations and characterize their radial distributions and extensions.