Assembly of elliptical galaxies

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Dry mergers

• 2/3 of bulge-dominated red galaxies show tidal
  features indicating recent or ongoing mergers
• Nineteen pairs allows study of progenitors
• Progenitors red and massive median mass ratio 14

van Dokkum 2005
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Dry mergers

• 2/3 of bulge-dominated red galaxies show tidal
  features indicating recent or ongoing mergers
• Nineteen pairs allows study of progenitors
• Progenitors red and massive median mass ratio 14

van Dokkum 2005