Overview of the ⟨3D⟩ − 3D line formation differences given in abundances displacement Δlog ε vs. equivalent width Wλ for the Fe i and Fe ii fictitious spectral lines with the excitation potentials χexc = 1.0 and 4.0 eV including the Sun, TO, RG and dwarf simulation (from top to bottom). The averages on layers of constant geometric height ⟨3D⟩z (black dashed), constant column mass density ⟨3D⟩m (black dotted), constant Rosseland optical depth ⟨3D⟩Ross (black solid) and at 500 nm ⟨3D⟩500 (orange dashed triple-dotted lines) are indicated. Furthermore, we show 1D models (red solid), -averages (blue dashed) and (green dashed lines). The microturbulence of ξturb = 1.0 km s-1 has been used throughout. Notice the different ordinates.
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