Quiescent ultra-diffuse galaxies in the field originating from backsplash orbits

@article{Benavides2021QuiescentUG,
  title={Quiescent ultra-diffuse galaxies in the field originating from backsplash orbits},
  author={Jos{\'e} A Benavides and Laura V. Sales and Mario G. Abadi and Annalisa Pillepich and Dylan Nelson and Federico Marinacci and Michael C. Cooper and R{\"u}ediger Pakmor and Paul Torrey and Mark Vogelsberger and Lars E. Hernquist},
  journal={Nature Astronomy},
  year={2021}
}
Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star… 

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