# UVIT Observations of UV-Bright Stars in four Galactic Globular Clusters

## TL;DR

This study uses UVIT on AstroSat to analyze UV-bright stars in four Galactic globular clusters, identifying key stellar populations and their distributions to understand cluster evolution.

## Contribution

It provides new UV photometric data and detailed analysis of BHBs and BSS in four globular clusters, enhancing understanding of their properties and distributions.

## Key findings

- Identified 150 BHB stars across four clusters.
- Detected 40 BSS stars and analyzed their distributions.
- Studied temperature and radial profiles of BHBs and BSS.

## Abstract

We have performed photometric analysis of four Galactic globular clusters (GGCs): NGC 4147, NGC 4590, NGC 5053 and NGC 7492 using far-UV and near-UV filters of the Ultraviolet Imaging Telescope (UVIT) on-board AstroSat. With the help of color-magnitude diagrams (CMDs), we have identified 150 blue horizontal branch stars (BHBs), and 40 blue straggler stars (BSS) in the four GGCs. We study the temperature and radial distribution of BHBs and BSS for the four GGCs.