- Spiral Galaxies
- Spiral Galaxies
- Distribution of Starlight
- Starlight, Disk, Bulge, Sequence of Disk Galaxies
- Distribution of Gas and Dust
- Distribution of Gas and Dust
- Radio Emission
- Radio Emission, Synchrotron Emission, Magnetic Fields
- Gas Motion
- Spider Diagrams, Rotation Curves, Exponential Disks, Dark Matter Halos, Tully-Fisher
- Spiral Arms
- Spiral Patterns, Winding Problem, Epicyclic Orbits
- Barred Disks
- Observations, Numerical Calculation
- Bulges of Disk Galaxies
- Bulges
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