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Substructure in dwarf spheroidals: a star cluster connection?

Research output: Contribution to journalJournal article

Published
  • M. I. Wilkinson
  • Jan Kleyna
  • N. W. Evans
  • G. Gilmore
  • E. K. Grebel
  • Andreas Koch
  • Justin Read
  • R. Young
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<mark>Journal publication date</mark>2005
<mark>Journal</mark>Proceedings of the International Astronomical Union
Issue numberC198
Volume1
Number of pages4
Pages (from-to)240-243
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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.