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Table 3.
Expected observational signatures of various possibilities of AB detection.
| Observable | True AB | Observed | Spurious AB due to | Spurious AB due to |
|---|---|---|---|---|
| trend | circularity | incorrect cluster mass | ||
| Concentration | ce > cl | ce > cl | ce = cl | ce ≈ cl |
| Galaxy number | Ne < Nl | Ne < Nl | Ne = Nl | Ne ≲ Nl |
| BCG offset | de < dl | de < dl | de = dl | de > dl |
| Magnitude gap | Δe > Δl | Δe > Δl | Δe = Δl | Δe > Δl |
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