Tabiiy fanlar

ANALYSIS OF OBSERVATIONAL DATA OF GLOBULAR CLUSTERS WITHIN THE FRAMEWORK OF GAIA DR2 (+25 CLUSTERS)

globular clusters, structural parameters, number density, cosmic observations.

Authors

Globular clusters (GCs) are important systems for understanding stellar dynamics and Galactic structure through their observable surface number density profiles. In our previous study, we analyzed the apparent number density of 81 GCs using Gaia DR2 data. Building upon this, we present an analysis of 25 additional GCs, whose density profiles were provided by de Boer et al. (2020). Using the King model and least squares fitting, we calculated the structural parameters – Including the concentration parameter (β), core radius (r₀), and central surface density (σ₀) - for 15 of these clusters. The remaining 10 clusters were excluded due to nonstandard profiles or insufficient central concentration