Fundamental Parameters of Some New Discovered Open star Clusters

TL;DR

This paper determines fundamental properties of newly discovered open star clusters using near-infrared photometry, including their distances, ages, masses, and dynamical states, based on 2MASS data analysis.

Contribution

It provides the first detailed analysis of these clusters' properties, expanding knowledge of their structure and evolution using 2MASS photometry.

Findings

Clusters' centers and radii are identified.

Distances, reddening, and ages are estimated.

Mass functions and dynamical relaxation times are calculated.

Abstract

We present here the fundamental properties of some newly discovered open star clusters (Teutsch 144, Alessi 53, Riddle 4 and Juchrt 12) using the JHK Near-IR photometry (2MASS survey) of Cutri et al. (2003). These clusters have been selected from Kronberger et al. (2006) who presented some new discovered stellar groups on the basis of 2MASS photometry and the DSS visual images. The astrometry and photometric parameters are determined using the stellar density distributions and color-magnitude diagrams fittings. Center, radius, membership, distances, reddening, age, luminosity function, mass function, total mass, and the dynamical relaxation time have been estimated for the first time. This paper is a part of Reda's PhD project.