Astronomy 210
Lecture 32, April 11 Spring 2018

Lecture Notes: pdf file

The Hertzsprung-Russell / Color-Magnitude Diagram

The Life Cycle of of a 1 Msun star

  • protostar birth in molecular clouds
  • adulthood: the main sequence
  • Red giants and implications for HR diagrams like this and this
  • Helium flash
  • Helium burning: horizontal branch
  • Death throes: asymptotic giant branch
  • 1Msun HR diagram: evolutionary path, animation

Testing Stellar Evolution Theory: Star Clusters

Remains of a 1 Msun star: White Dwarf

Remains of a 1 Msun star: Planetary nebula

 The Helix Nebula from Blanco and Hubble

Lecture Archive

Brian D. Fields
Last modified: Fri Apr 8 12:05:13 CDT 2011