Supplements
S12. Molecules Summary Slides - [pdf]
S13. Review paper by Kutner - [pdf]
S15. John Lacy Seminar (4/3/13) - [pdf]
S14. Slides on H2 - [pdf]
S16. Dust Summary Slides - [pdf]
Course Notes
Current Unit
D. Interstellar Molecules - [pdf]
- Molecular Spectroscopy
- Electronic States
- Rotational Levels and Transitions
- Vibrational States, Branches, & Bandheads
- Additional Structure
- Interpreting Molecular Lines - Coming Soon!
- Molecular Excitation
- Radiative Transfer
- The Standard Analysis for CO
- Radiative Trapping
- The H2 Molecule
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E. Interstellar Dust
S1. Tables of Constants - [pdf]
S2. Maxwellians Reconsidered - [pdf]
S3. Kappa Distributions - [pdf]
S4. Boltzmann Diagrams - pdf
S5. Atomic Processes [NJE] - [pdf]
Previous Units
- Overview: Properties and Phases - [pdf]
- Introductory Remarks
- Physical Parameters of the ISM
- Kinetic Equilibrium/Temperatures
- Excitation Equilibrium
- Ionization Equilibrium
- Interstellar Radiation Field (ISRF)
- Three “Canonical” Concepts – [pdf]
- Thermal Equilibrium
- Heating & Cooling: 2-process model
- Modern Menu of Processes
- Grain Photoelectric Heating
- Cooling Curves & Equation of State – [pdf]
- Global Models of the ISM
- FGH: The Two-Phase ISM
- McKee-Ostriker: Adding a Hot Phase
S6. Ionization Potentials - [pdf]
S7. Solar Abundances - [pdf]
A'. Spectroscopy of the ISM
- Atomic Structure: Energy Levels – [pdf]
- Quantum Numbers and Orbitals
- Nomenclature for Multi-Electron Atoms
- Common Energy Level Patterns
- Types of Radiative Transitions
- Electric Dipole (E1) Transitions
- Magnetic Dipole (M1) and Electric Quadrupole (E2) Transitions
- Level Populations – [pdf]
- Collisional Cross-Sections and Rates
- The Two-Level Atom
- Multi-Level Atoms
- Radiative Excitation
S8. Useful Formulae - [pdf]
S9. Curve of Growth - [pdf]
B. H I Regions – [pdf]
- Optical and UV Absorption Lines: Theory
- Interstellar Resonance Lines
- Radiative Transfer in Spectral Lines
- Equivalent Width and the Curve of Growth
- Absorption-Line Studies of the ISM – [pdf]
- Velocity Structure and Column Densities
- Physical Conditions in the Gas
- Gas-Phase Elemental Abundances and Depletions
- The H I 21 cm Line: Theory – [pdf]
- Atomic Parameters
- Level Populations
- Radiative Transfer in the 21 cm Line
- Observations of the 21 cm Line – [pdf]
- Content and Presentation of 21 cm Data
- Physical Conditions in the Gas
- Distribution of H I in the Galaxy
- H I in Discrete Objects
S10. Summary Pages - [pdf]
S11. H I Line Intensities - [pdf]
C. H II Regions - [pdf]
- Ionization Structure
- Ionization of Hydrogen
- Helium Ionization - [pdf]
- Other Elements
- Thermal Equilibrium
- Heating: Photoelectrons from Hydrogen
- Recombination and Free-free Emission
- Cooling via Collisionally-Excited Lines
- Recombination Emission - [pdf]
- The Recombination Line Spectrum
- Optical Continuum Emission - [pdf]
- Radio Continuum Emission
- Radio Recombination Lines
- Determination of Physical Properties - [pdf]
- Global Parameters
- Correcting for Extinction
- Temperature and Density Diagnostics - [pdf]
- Ionic Abundance Determinations
- Elemental Abundances