Understanding the origin of palladium in metal-poor stars based on the non-local thermodynamic equilibrium analysis of Pd I lines

Open Access

Fig. 2

Departure coefficients, b, for the selected levels of Pd I as a function of log τ₅₀₀₀ in the model atmosphere with T_eff = 5780 K, log g = 4.44, and [Fe/H] = 0. The tick marks indicate the optical depth unity for the Pd I 3242 (1) and 3404 Å (2) line centers.

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