AST-525advanced

Stellar Streams & Galactic Archaeology: Advanced Connections

Stellar streams are elongated structures of stars torn from globular clusters or dwarf galaxies by the Milky Way's tidal field. Galactic archaeology reconstructs the Milky Way's merger history, maps the dark-matter halo, and identifies chemically distinct building blocks from which the Galaxy assembled.

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Stellar Streams & Galactic Archaeology: Advanced Connections

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AST-524Stellar Streams & Galactic Archaeology: Observation, Measurement & Evidence→

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AST-526Galaxy Morphology: Foundations→

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Stellar streams are elongated structures of stars torn from globular clusters or dwarf galaxies by the Milky Way's tidal field.

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As a satellite or cluster orbits the Milky Way, differential gravity removes stars preferentially near tidal boundaries.

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Wide-field surveys and Gaia reveal coherent six-dimensional phase-space structures and abundance patterns.