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PPT Slide

PPT Slide

Understand basic properties of star formation/galaxies ? guess how a young galaxy, or protogalaxy would appear

Consider also HST deep field observations.

New stars very blue: will appear redder at large distances (redshift).

Dust protects gas from radiation. Dust is heated and is luminous at infrared wavelengths.

Main raw material is hydrogen.

Gas in close to a group of galaxies (cluster) may become very hot and emit X-rays.

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