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We have introduced a semi-automated quantitative method to estimate the ageand reddening of 1072 star clusters in the Large Magellanic Cloud (LMC) usingthe Optical Gravitational Lensing Experiment (OGLE) III survey data. This studybrings out 308 newly parameterised clusters. In a first of its kind, the LMCclusters are classified into groups based on richness/mass as very poor, poor,moderate and rich clusters, similar to the classification scheme of openclusters in the Galaxy. A major cluster formation episode is found to happen at125 +- 25 Myr in the inner LMC. The bar region of the LMC appears prominentlyin the age range 60 - 250 Myr and is found to have a relatively higherconcentration of poor and moderate clusters. The eastern and the western endsof the bar are found to form clusters initially, which later propagates to thecentral part. We demonstrate that there is a significant difference in thedistribution of clusters as a function of mass, using a movie based on thepropagation (in space and time) of cluster formation in various groups. Theimportance of including the low mass clusters in the cluster formation historyis demonstrated. The catalog with parameters, classification, and cleaned andisochrone fitted CMDs of 1072 clusters, which are available as online material,can be further used to understand the hierarchical formation of clusters inselected regions of the LMC.

Star Clusters in the Magellanic Clouds-1: Parameterisation and Classification of 1072 Clusters in the LMC