Fig. 5
Best fits (continuous curve) of the spectral ranges 3727.7−3728.5 Å and 3795.6−3797.1 Å (top row), where the investigated Ru i, Tm ii, Gd ii, and Ho ii lines are located; Ir i 3800 Å and Os i 4260 Å (bottom row) in the observed spectrum of HE 2252−4225 (bold dots). The dotted curves show the synthetic spectrum with no relevant element in the atmosphere. The dashed curve in the top left panel shows the effect of a 0.2 dex lower Ru abundance on the synthetic spectrum.
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