Thin disc, thick disc and halo in a simulated galaxy

  title={Thin disc, thick disc and halo in a simulated galaxy},
  author={Chris B. Brook and Gregory S. Stinson and Brad K. Gibson and Daisuke Kawata and Elisa L. House and Maider S. Miranda and Andrea V. Macci{\`o} and Kate Pilkington and Rok Rovskar and James Wadsley and Thomas R. Quinn},
  journal={Monthly Notices of the Royal Astronomical Society},
Within a cosmological hydrodynamical simulation, we form a disc galaxy with subcomponents 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 (�U,V,W = 41,31,25 kms 1 ), high [Fe/H], and low [O/Fe]. Conversely, the thick disc stars are old (6.6<age<9.8 Gyrs… 
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