TL;DR
This paper presents a new catalog of 120 open star clusters derived from JHK-2MASS data, providing their fundamental parameters for the first time, including diameter, distance, reddening, and age.
Contribution
It offers the first comprehensive catalog of 120 open clusters with derived parameters using uniform methods and near-infrared photometry.
Findings
120 new open clusters characterized with fundamental parameters
Calibration of reduction procedures through re-estimation of 13 clusters
Comparison of non-open clusters to refine classification
Abstract
A sample of 145 JHK--2MASS observations of NGC open star clusters is studied, of which 132 have never been studied before. Twelve are classified as non-open clusters and 13 are re-estimated self-consistently, after applying the same methods in order to compare and calibrate our reduction procedures. The fundamental and structural parameters of the 120 new open clusters studied here are derived using color-magnitude diagrams of JHK Near-IR photometry with the fitting of solar metallicity isochrones. We provide here, for the first time, a catalog of the main parameters for these 120 open clusters, namely, diameter, distance, reddening and age.
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