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Galactic Disk, Bulge & Halo: Advanced Connections

The Milky Way is not a uniform swarm of stars. Decomposing the Milky Way into components lets astronomers reconstruct galaxy assembly, chemical enrichment, spiral structure, disk heating, and dark-matter distribution.

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Galactic Disk, Bulge & Halo: Advanced Connections

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Prerequisites

AST-504Galactic Disk, Bulge & Halo: Observation, Measurement & Evidence→

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After this

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AST-506The Galactic Center & Sagittarius A*: Foundations→

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The Milky Way is not a uniform swarm of stars.

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Different components reflect different formation histories.

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Star counts, distances, proper motions, spectroscopy, gas mapping, and globular-cluster orbits reveal distinct spatial and kinematic populations.

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