Chapter 14 Spiral Galaxy

Figure 14.1 Galactic Plane

Figure 14.2a Spiral Galaxies

Figure 14.2bc Spiral Galaxies

Figure 14.3 Herschel’s Galaxy Model

Figure 14.4ab Variable Stars

Figure 14.4c Variable Stars

Figure 14.5 Variable Stars on the H–R Diagram

Figure 14.6 Period–Luminosity Plot

Figure 14.7 Variable Stars on Distance Ladder

Figure 14.8 Globular Cluster Distribution

Figure 14.9 Stellar Populations in our Galaxy

Discovery 14-1 Early Computers

Figure 14.10 Observations of the Galactic Disk

Figure 14.11 Infrared View of the Milky Way Galaxy

Figure 14.12 Stellar Orbits in Our Galaxy

Figure 14.13 Milky Way Formation

Figure 14.14 Milky Way Spiral Structure

Figure 14.15 Differential Galactic Rotation

Figure 14.16 Density-Wave Theory

Discovery 14-2 Density Waves

Figure 14.17 Self-Propagating Star Formation

Figure 14.18 Galaxy Rotation Curve

Figure 14.19 Gravitational Lensing

Figure 14.20 Galactic Center in Visible Light

Figure 14.21 Radio/Infrared Images of the Galactic Center

Figure 14.22 Orbits Near the Galactic Center

Figure 14.23 (1) Galactic Center Zoom

Figure 14.23 (2) Galactic Center Zoom