Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal) - III. Age and metallicity distribution of Gaia-Sausage-Enceladus stars near the Sun

Open Access

Fig. 2

CMD of GSE-cluster sample and corresponding fit and residuals. Left panels: quality-cut GSE-cluster sample and corresponding solution CMD of our best-fit deSFH. Only the stars inside the region defined by the solid black line are considered for the fit. Rightmost panel: Poissonian residuals as $σ = (N_{observed} - N_{solution}) / \sqrt{(N_{observed} + N_{solution}) / 2}$ $\sigma=\left(N_{\text {observed }}-N_{\text {solution }}\right) / \sqrt{\left(N_{\text {observed }}+N_{\text {solution }}\right) / 2}$ .

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