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The star complexes (large scale star forming regions) of NGC 6822 were tracedand mapped and their size distribution was compared with the size distributionof star complexes in the Magellanic Clouds (MCs). Furthermore, the spatialdistributions of different age stellar populations were compared with eachother. The star complexes of NGC 6822 were determined by using the isopleths,based on star counts, of the young stars of the galaxy, using a statisticalcutoff limit in density. In order to map them and determine their geometricalproperties, an ellipse was fitted to every distinct region satisfying thisminimum limit. The Kolmogorov-Smirnov statistical test was used to studypossible patterns in their size distribution. Isopleths were also used to studythe stellar populations of NGC 6822. The star complexes of NGC 6822 weredetected and a list of their positions and sizes was produced. Indications ofhierarchical star formation, in terms of spatial distribution, time evolutionand preferable sizes were found in NGC 6822 and the MCs. The spatialdistribution of the various age stellar populations has indicated traces of aninteraction in NGC 6822, dated before 350 +/- 50 Myr.

Star complexes and stellar populations in NGC 6822 - Comparison with the Magellanic Clouds