Eccentricity distribution of the sample of exoplanet.eu with masses larger than 0.5 Jupiter masses where the planets have a minimal distance to their host star of 0.1 AU (solid black line) or 1.0 AU (dashed black line). In red we show the eccentricity distribution of the planets observed in Barbato et al. (2018), while we show eccentricity of the giant planets used in the study of Zhu & Wu (2018) in blue. In the dashed blue solid line we also show the sample of Zhu & Wu (2018), but exclude two planetary systems where the companions are more massive than 5 Jupiter masses, which could inherit their eccentricity from planet–disc interactions.
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