3D non-LTE modeling of the stellar center-to-limb variation for transmission spectroscopy studies - Na I D and K I resonance lines in the Sun

Open Access

Fig. 13

Transmission curves of the Na I D₁ (top), Na I D₂ (middle) and K I line (bottom) for a Jupiter-sized planet transiting a Sun-like star in different trajectories, colored as in legend. The CLV curves are made using synthetic spectra in 3D non-LTE. The relative flux is computed in a bandwidth of 0.75 Å on the line center.

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