Hierarchical formation of bulgeless galaxies: why outflows have low angular momentum

  title={Hierarchical formation of bulgeless galaxies: why outflows have low angular momentum},
  author={Chris B. Brook and Fabio Governato and Rok Ro{\vs}kar and Gregory S. Stinson and Alyson M. Brooks and James Wadsley and Thomas R. Quinn and Brad K. Gibson and Owain N. Snaith and Kate Pilkington and Elisa L. House and Andrew Pontzen},
  journal={Monthly Notices of the Royal Astronomical Society},
Using high resolution, fully cosmological smoothed particle hydrodynamical simulations of dwarf galaxies in a Lambda cold dark matter Universe, we show how high redshift gas outflows can modify the baryon angular momentum distribution and allow pure disc galaxies to form. We outline how galactic outflows preferentially remove low angular momentum material due a combination of (a) star formation peaking at high redshift in shallow dark matter potentials, an epoch when accreted gas has relatively… 
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