Dynamical friction in ultra-faint galaxies removes central dark matter via star-DM interactions, forming cores and compact stellar clusters with binaries.
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Planar very metal-poor stars exhibit chemical homogeneity and dwarf-galaxy-like abundance ratios, supporting origin from one ancient accreted system tentatively called Loki.
citing papers explorer
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Collisional Dynamics of Stars and Dark Matter in Ultra-Faint Galaxies
Dynamical friction in ultra-faint galaxies removes central dark matter via star-DM interactions, forming cores and compact stellar clusters with binaries.
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An ancient system hidden in the Galactic plane?
Planar very metal-poor stars exhibit chemical homogeneity and dwarf-galaxy-like abundance ratios, supporting origin from one ancient accreted system tentatively called Loki.