Thin disc, thick disc and halo in a simulated galaxy Journal Articles uri icon

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abstract

  • Within a cosmological hydrodynamical simulation, we form a disc galaxy with sub- components which can be assigned to a thin stellar disc, thick disk, and a low mass stellar halo via a chemical decomposition. The thin and thick disc populations so selected are distinct in their ages, kinematics, and metallicities. Thin disc stars are young (<6.6 Gyr), possess low velocity dispersion ({\sigma}U,V,W = 41, 31, 25 km/s), high [Fe/H], and low [O/Fe]. The thick disc stars are old (6.6

authors

  • Brook, CB
  • Stinson, GS
  • Gibson, BK
  • Kawata, D
  • House, EL
  • Miranda, MS
  • Macciò, AV
  • Pilkington, K
  • Roškar, R
  • Wadsley, James
  • Quinn, TR

publication date

  • October 11, 2012