Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows

  title={Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows},
  author={Fabio Governato and Chris Brook and Lucio Mayer and Audrey D. Brooks and George Rhee and James Wadsley and Patrik Jonsson and Beth Willman and Graham Stinson and Thomas Quinn and Piero Madau},
For almost two decades the properties of ‘dwarf’ galaxies have challenged the cold dark matter (CDM) model of galaxy formation. Most observed dwarf galaxies consist of a rotating stellar disk embedded in a massive dark-matter halo with a near-constant-density core. Models based on the dominance of CDM, however, invariably form galaxies with dense spheroidal stellar bulges and steep central dark-matter profiles, because low-angular-momentum baryons and dark matter sink to the centres of galaxies… CONTINUE READING

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