The fraction of dark matter within galaxies from the IllustrisTNG simulations

  title={The fraction of dark matter within galaxies from the IllustrisTNG simulations},
  author={Mark R. Lovell and Annalisa Pillepich and Shy Genel and Dylan Nelson and Volker Springel and R{\"u}diger Pakmor and Federico Marinacci and Rainer Weinberger and Paul Torrey and Mark Vogelsberger and Adebusola B Alabi and Lars Hernquist},
  journal={Monthly Notices of the Royal Astronomical Society},
We use the IllustrisTNG (TNG) cosmological simulations to provide theoretical expectations for the dark matter mass fractions (DMFs) and circular velocity profiles of galaxies. TNG predicts flat circular velocity curves for z = 0 Milky Way (MW)-like galaxies beyond a few kpc from the galaxy centre, in better agreement with observational constraints than its predecessor, Illustris. TNG also predicts an enhancement of the dark matter mass within the 3D stellar half-mass radius (rhalf; M200c… 
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