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Cosmology W13 - Physics Department, UCSB

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Spiral galaxies <br />

• Like our very own Milky Way and Andromeda <br />

– Rota^on supported <br />

– Rich in cold gas <br />

– Typically star forming <br />

– Spiral density waves <br />

– Two main baryonic components <br />

• Bulge (and/or pseudobulge) <br />

• Disk

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