Reverse engineering the Milky Way

  title={Reverse engineering the Milky Way},
  author={Duncan A. Forbes},
  journal={Monthly Notices of the Royal Astronomical Society},
  • D. Forbes
  • Published 29 January 2020
  • Physics
  • Monthly Notices of the Royal Astronomical Society
The ages, metallicities, alpha-elements, and integrals of motion of globular clusters (GCs) accreted by the Milky Way from disrupted satellites remain largely unchanged over time. Here we have used these conserved properties in combination to assign 76 GCs to five progenitor satellite galaxies – one of which we dub the Koala dwarf galaxy. We fit a leaky-box chemical enrichment model to the age–metallicity distribution of GCs, deriving the effective yield and the formation epoch of each… 

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