Astr 221 November 7, 2003: Stars and Such  

Collapse of a Protostar

Timescale for Collapse

Pressure and Gravity diagrams

Free Fall time

Giant Molecular Clouds and the Virial Theorem

Implications of Virial theorem

More on the Virial theorem

Question: where would you plot this?

Dynamic collapse of a Protostar

Protostar graph

More protostar collapsing

Star Formation

Being Gravitationally bound

Question: Is Star formation spontaneous, or does it need an external trigger?

T Tauri Stars

T Tauri Star graph

P Cygni profile graph

P Cygni profiles