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Fig. 5


Expected magnitude limits in the continuum (S/N = 10) with 30–50 h integration time are shown for ELT, (orange, Evans et al. 2013), JWST (black, available in tabular form and a VLT-FORS (green, this work). The estimated limit for KMOS is magnitude 21.5 in the YJ band with 50h integration (rescaling from the KMOS manual, Sect. 2.3.4). The schematic position of GDS_1408 is reported (blue) with the continuum magnitude 26.1, the typical ultraviolet absorption lines from the Lyα to CIV 1550 (grey region, UV-abs) and the basic emission lines, e.g., CIII]1909, [OII]3727, Hβ, [OIII]4959-5007 and Hα.

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