Interstellar Medium and the Milky Way

Contents

• Introduction
• Interstellar Medium (ISM)
  • Dust
    • Extinction
    • Reddening
    • Review Questions
  • Gas
    • H II Regions
    • 21 cm radiation
    • Using 21 cm radiation to Map the Galaxy
    • Molecules
      • Molecular clouds
      • Molecular Hydrogen and Carbon Monoxide Connection
    • Review Questions
• Galactic Structure
  • Period-Luminosity Relation for Variable Stars
    • Cepheids
      • Type I: classical Cepheids
      • Type II: W Virginis Cepheids
    • RR Lyrae
  • Our Location
  • Our Motion
  • Deriving the Galactic Mass from the Rotation Curve
  • Spiral Arms
    • Density Wave Theory
    • Self-propogating Star Formation
    • Transient Spirals
  • Populations of Stars
  • Galactic Center
  • Milky Way Summary
  • Review Questions