ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater

@article{Belokurov2014ATLASLT,
  title={ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater},
  author={Vasily A Belokurov and Michael J. Irwin and Sergey E. Koposov and N. Wyn Evans and Eduardo A. Gonz{\'a}lez-Solares and N. Metcalfe and Tom Shanks},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2014},
  volume={441},
  pages={2124-2133}
}
We announce the discovery of a new Galactic companion found in data from the ESO VST ATLAS survey, and followed up with deep imaging on the 4-m William Herschel Telescope. The satellite is located in the constellation of Crater (the Cup) at a distance of ∼170 kpc. Its half-light radius is rh = 30 pc and its luminosity is MV = −5.5. The bulk of its stellar population is old and metal poor. We would probably have classified the newly discovered satellite as an extended globular cluster were it… Expand
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