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This article is an erratum for:

Volume 638, June 2020
Article Number C5
Number of page(s) 1
Section Catalogs and data
Published online 19 June 2020

An error occurred during the production process of the original article pertaining to the numbering of the figures beginning with Fig. 18. Figure 20 is incorrectly labeled and it should be named Fig. 18, and so on. However, the citations of the figures in the text are consistent with their respective image.

© ESO 2020

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