Substructure in dwarf spheroidals - A star cluster connection?

Mark I. Wilkinson, Jan T. Kleyna, N. Wyn Evans, Gerry F. Gilmore, Eva K. Grebel, Andreas Koch, Justin Read, Roland Young

Research output: Contribution to journalArticlepeer-review


The observational evidence for kinematic substructure in Local Group dSphs is reviewed. The properties of these substructures are consistent with their being disrupted star clusters. The persistence of cold substructure argues strongly against the presence of dark matter cusps in the haloes of dSphs. A formation scenario for dSphs is described involving the merger of star clusters in the potential well of a low-mass dark matter halo.

Original languageEnglish
Pages (from-to)240-243
Number of pages4
JournalProceedings of the International Astronomical Union
Issue numberC198
Publication statusPublished - 2005
Externally publishedYes


  • Galaxies: dwarf
  • Galaxies: formation
  • Galaxies: halos
  • Galaxies: kinematics and dynamics
  • Galaxies: star clusters
  • Local Group
  • Stars: kinematics

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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