The principal astrophysical parameters of the open clusters Gulliver 18 and Gulliver 58 determined using Gaia EDR3 data

TL;DR

This study uses Gaia EDR3 data to analyze two open clusters, Gulliver 18 and Gulliver 58, determining their fundamental parameters and internal dynamics for the first time.

Contribution

It provides the first comprehensive photometric and astrometric analysis of these clusters using Gaia EDR3 data, including membership, ages, distances, and dynamical properties.

Findings

Determined cluster membership, ages, and distances.

Estimated mass functions and total masses.

Analyzed dynamical states such as mass segregation.

Abstract

A photometric and astrometric study of the two open star clusters Gulliver 18 and Gulliver 58 was carried out for the first time using the early third data release of the Gaia space observatory (Gaia-EDR3). By studying the proper motions, parallaxes, and color-magnitude diagrams of the two clusters, we determined their actual cluster membership. Therefore, ages, color excesses, and heliocentric distances of the clusters were determined. The luminosity function, mass function, total mass, mass segregation, and relaxation time of Gulliver 18 and Gulliver 58 were estimated as well.