The formation of stars. Learning Objective: How do stars form?. The formation of stars. All of you will describe the basic steps in star formation Most of you will explain how mass relates to star structure
Here are two ways to thinking about when a protostar when it gets hot enough for fusion to start
a Describe the energy changes that are going on.
b Now imagine the same scene, but in reverse. How is this similar to the formation of a protostar? How does it differ?
4. Suggest reasons why a cold cloud of gas is more likely to contract than a hot one.
The photosphere has a granular appearance, which is continually changing. Something is going on under the surface
Physicist can use these ideas to develop models of the inside of a star.
5. Why does hydrogen fusion take place only in the core of a main-sequence star?
6. On a sketch copy of an H–R diagram, label the ends of the main sequence to show the most massive and the least massive stars.