How Did Globular Clusters Form

  title={How Did Globular Clusters Form},
  author={Sidney van den Bergh},
  journal={The Astrophysical Journal},
  • S. Bergh
  • Published 17 August 2001
  • Physics
  • The Astrophysical Journal
It is suggested that there have been at least two physically distinct epochs of massive cluster formation. The first generation of globular clusters may have formed as halo gas was compressed by shocks driven inward by ionization fronts generated during cosmic reionization at z ~ 6. On the other hand, a second generation of massive clusters might have been formed at later times by compression, and subsequent collapse, of giant molecular clouds. In some cases this compression may have been… 
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