2. Gravitational Lenses in the 6dF GS

• Rosetta Stone of lensing:

  • QSO2237+050
  • (Huchra et al 1985)

• lens: z=0.04 spiral galaxy
• model (C. Trott):
• core of dark matter profile is flat, not cuspy
• any of these in the 6dF GS?

total rotation curve

dark matter

disk

bulge

bar

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