On the radial distribution of stars of different stellar generations in the globular cluster NGC 3201

TL;DR

This study investigates how different stellar generations are spatially distributed within the globular cluster NGC 3201, revealing that second-generation stars tend to be more centrally located than first-generation stars.

Contribution

It combines multicolour photometry with chemical abundance data to analyze the radial distribution of stellar generations in NGC 3201, providing new insights into their spatial segregation.

Findings

Second-generation stars are more centrally concentrated.

Radial dependence of giant branch star locations was observed.

Supports previous spectroscopic results with photometric evidence.

Abstract

We study the radial distribution of stars of different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of the location of stars on the giant branch was found. We coupled the photometric information to our sample of 100 red giants with Na, O abundances and known classification as first or second-generation stars. We find that giants stars of the second generation in NGC 3201 show a tendency to be more centrally concentrated than stars of the first generation, supporting less robust results from our spectroscopic analysis.