Mean abundance differences, Δ [X/Fe] SUN − STARS, between the Sun, 29 planet hosts (blue filled circles), and 32 “single” stars (red open circles) of the sample of all “hot” analogs. Error bars are the standard deviation from the mean divided by the square root of the number of stars. The points of stars hosting planets have been artificially shifted by –0.15 dex for the sake of clarity. Linear fits to the data points weighted with the error bars are also displayed for planet hosts (dashed line) and “single” stars (red solid line). The right panel shows the results after removing the galactic chemical evolution effects using the linear fits to the 32 “single” stars.
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