Galaxy Formation and Evolution

• ALMA and the Formation of Galaxies

• Pierre Cox
• IAS, Orsay, France

• « The stellar systems are scattered through space as far
• as telescopes can penetrate. We find them smaller and
• fainter, in constantly increasing numbers, and we know
• that we are reaching out into space, until, with the
• faintest nebulae than can be detected with greatest
• telescopes, we arrive at the frontiers of the known
• Universe. »
• Edwin Hubble, The Realm of the Nebulae (1936)

• Spiral Galaxy NGC1512

• A Galaxy is a large Assemblage of Stars, Gas and Dust that is held together by the mutual gravitational interaction between its Constituents. Galaxies contain between a few million and about ten trillion Stars together with differing proportions of interstellar matter (Gas & Dust)

• A Galaxy:the Tip of the Iceberg of Dark Matter

• Angular Momentum of the Halo

• Dark Matter Halo

• Old Stars

• Young Stars

• Supernova

• Cold Gas

• Hot Gas

• 100 kpc

• M=1012 Msol

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• Today

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• Age of the Universe

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