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Gravitational Dynamics: An Introduction HongSheng Zhao

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C1.1.1 Our Galaxy and Neighbours How structure in universe form/evolve? Galaxy Dynamics Link together early universe & future. AS4021 Gravitational Dynamics

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Gravitational Dynamics: An Introduction HongSheng Zhao
AS4021 Gravitational Dynamics C1.1.1 Our Galaxy and Neighbours
How structure in universe form/evolve? Galaxy Dynamics Link together early universe & future. AS4021 Gravitational Dynamics AS4021 Gravitational Dynamics
Our Neighbours M31 (now at 500 kpc) separated from MW a Hubble time ago Large Magellanic Cloud has circulated our Galaxy for about 5 times at 50 kpc argue both neighbours move with a typical km/s velocity relative to us. AS4021 Gravitational Dynamics Outer Satellites on weak-g orbits around Milky Way
R>10kpc: Magellanic/Sgr/Canis streams R>50kpc: Draco/Ursa/Sextans/Fornax ~50 globulars on weak-g (R

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