ICYBOB · Initial Conditions of YMCs, Birth of OB associations and long term evolution of stellar clusters

The goal of this proposal is to establish a new era of stellar cluster evolution research by performing numerical simulations on different scales, and of different stages of a cluster’s life, from the formation of YMCs, the formation and evolution of OB associations, to the evolution of clusters and associations in galaxies. The PI is one of the pioneers of galactic simulations of GMC and star formation was one of the first numericists to perform galactic scale simulations of molecular cloud formation and evolution, and has produced some of the most realistic and sophisticated isolated simulations of galaxies in this field to date. The next challenge is to follow cluster evolution, something which has not yet been attempted numerically. And, with the GaiaAIA instrument set to transform stellar astronomy in our Galaxy, our work will provide a fundamental theoretical counterpart. Key questions we will address include i) how does gas disperse from new clusters and what happens to that gas, ii) how do YMCs form, iii) how do new clustersGiant Molecular Clouds (GMCs) evolve into OB associations, and ivii) how long can clusters survive for as they orbit a galaxy and what causes their destruction.