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Fig. 11


Top: best fitting star formation efficiency f for the given mean radius rh and surface density profile slopes β. Primordial boundary conditions as discussed in the text would imply f ≲ 0.4 and rh ≲ 2 pc. Bottom: best fitting pre-enrichment level for the same range in mean radius rh and surface density profile slopes β as above. A physically motivated lower limit for the pre-enrichment level is about ~ − 1.8 dex, see text for details.

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