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How does
mass affect collapse?
•More massive protostars have stronger gravity
•Collapse speed will be much faster
•Fast collapse and short lifetime means massive stars reach end of lifetime while low mass stars in cloud are just forming
–Supernova shocks may come from earlier generation of stars
•Sequential Star Formation
–Energy from supernova and other effects eventually disrupts cloud – prevents further collapse.
From our text: Horizons, by Sees