Fig. 4
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Absolute CMDs of the observed 5D Sequoia samples (first column). The top row shows Sequoia A and the bottom row shows the stricter selection Sequoia B. The middle column shows the best fit solution CMD and the final column shows the residual in terms of σ. The black dashed line in the first two columns corresponds to an isochrone (BaSTI-IAC alpha-enhanced with an age of 11.6 Gyr and [Fe/H] of −0.8 dex) that separates the blue and red halo sequences.
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