Time of binary formation. For bound systems (stable as well as unstable) this is the moment of the last close triple encounter, at which point a hierarchical triple configuration is achieved. For disrupted systems this is the moment of disruption. The figure shows the number of events occurring in time intervals of 10,000 yr, the red line indicates bound stable triple systems, the green line bound unstable triple systems, and the gray line unbound systems that have disrupted into a binary and a single star. The stars are classified according to the state they are in at an age of 100 Myr, when the simulations stop. The vertical line indicates 440,000 yr, the maximum lifetime assumed for the cloud cores.