Distribution of cores in different snapshots along with their properties in various global feedback bins. The positions of the cores represent their locations in the simulation box. The cores are are assumed to be circular, and the core properties (Sect. 3) are scaled with the size of these circles. First row: Radius of the core. Second and third rows: Velocity dispersion and mass of the cores, respectively. Bottom row: Virial parameter. The colours represent the time elapsed (in Myr) since the start of the simulation.