Panels a and b: same as Fig. 5 for the parallel model results. The dashed black line depicts the low-α model phase, whereas the black solid line stands for the high-α phase. In the latter case, the thin line shows the period of the evolution when the number of stars born in age bins of 1 Gyr is smaller than 2% of total number of stars formed. Panels c and d: chemical evolution model results where we have taken into account estimated age and [M/H] errors. Analogously to the thin solid line in the upper two panels, smaller purple starred symbols are associated to stars with ages lower than 8 Gyr (before the inclusion of age errors). Details are given in the text.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.