Stars

Star Formation & Fusion

Measuring Stars: Color tells us the Spectral Class and temperature (see picture below)

Star Classification

• HR Diagram - By graphing the ABSOLUTE brightness along with temperature we can see where it falls on the HR diagram and thus where a star is in it's life cycle.

Traditional pic:

HR Diagram also showing sizes of stars:

Life Cycle of a Star

Comparison of Sizes

• The Sun compared to Earth

Last modified: Friday, 22