The star formation history of the young open cluster NGC 2244

A star formation history (SFH) is the stellar record of the various processes that shaped a galaxy or an open cluster since its birth to its current physical state. Studying the NGC 2244 cluster, and in particular its massive star population, can improve our understanding of its formation mechanism, stellar evolution, feedback, and provide the basis for a better understanding of the formation of extragalactic star clusters. Probing the initial conditions of star formation (e.g. Initial Mass Function, initial rotation, multiplicity status, initial chemical composition) will allow to derive the birth and early-stage properties (projected rotational velocity distribution, multiplicity status, 3D kinematics, etc.) needed to construct the star formation history of NGC 2244 and to see if a single star-formation mechanism can be responsible for the wide range of properties that we observe for massive stars.