Modeling jet and outflow feedback during star cluster formation

摘要: Powerful jets and outflows are launched from the protostellar disks around newborn stars. These carry enough mass momentum to transform structure of their parent molecular cloud potentially control star formation itself. Despite importance, we have not been able fully quantify impact during a cluster. The main problem lies in limited computing power. We would resolve magnetic jet-launching mechanism close protostar at same time follow evolution parsec-size for million years. Current computer power codes fall orders magnitude short achieving this. In order overcome this problem, implement subgrid-scale (SGS) model launching outflows, which demonstrably converges reproduces mass, linear angular transfer, speed real jets, with ~ 1000 times lower resolution than be required without SGS model. apply new turbulent, magnetized cluster show that (1) eject about 1/4 clump high-speed quickly reaching distances more parsec, (2) reduce rate by factor two, (3) lead 1.5 as many stars compared no-outflow case. Most importantly, find average 3 may thus essential understanding characteristic stellar initial function.