THE NEXT GENERATION VIRGO CLUSTER SURVEY. VI. THE KINEMATICS OF ULTRA-COMPACT DWARFS AND GLOBULAR CLUSTERS IN M87

@article{Zhang2015THENG,
  title={THE NEXT GENERATION VIRGO CLUSTER SURVEY. VI. THE KINEMATICS OF ULTRA-COMPACT DWARFS AND GLOBULAR CLUSTERS IN M87},
  author={Hong-Xin 欣 Zhang 张红 and Eric W. Peng and Patrick C{\^o}t{\'e} and Chengze 则 Liu 刘成 and Laura Ferrarese and J-C. Cuillandre and Nelson Caldwell and Stephen D. J. Gwyn and Andr{\'e}s Jord{\'a}n and Ariane Lançon and Biao 彪 Li 李 and Roberto P. Mu{\~n}oz and Thomas H. Puzia and Kenji Bekki and John P. Blakeslee and Alessandro Boselli and Michael J. Drinkwater and P.-A. Duc and Patrick R. Durrell and Eric Emsellem and Peter Firth and R{\'u}ben S{\'a}nchez-Janssen},
  journal={The Astrophysical Journal},
  year={2015},
  volume={802}
}
The origin of ultra-compact dwarfs (UCDs; rh ≳ 10 pc)—objects larger and more massive than typical globular clusters (GCs), but more compact than typical dwarf galaxies—has been hotly debated in the 15 years since their discovery. Even whether UCDs should be considered galactic in origin, or simply the most extreme star clusters, is not yet settled. We present the dynamical properties of 97 spectroscopically confirmed UCDs and 911 GCs associated with the central cD galaxy of the Virgo cluster… 

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