Left – [Fe/H] and [Ref/H] distribution of the sample stars. The distribution lines for Jovian, Neptunian/super-Earth host and non-host stars are the same as in Fig. 9. The Neptunian and super-Earth distribution was set smaller for clarity. Right – Percentage of stars with giant (red dashed) and exclusively Neptunian and super-Earth (shaded blue) planets as a function of [Fe/H] and [Ref/H]. The Neptunian and super-Earth distribution was multiplied by 5 for better visibility.
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