Recent studies have shown that the elemental abundances in the Sunare anomalous when compared to most (about 85%) nearby solar twinstars. Compared to its twins, the Sun exhibits a deficiency ofrefractory elements (those with condensation temperatures K) relative to volatiles (K).This finding is speculated to be a signature of the planet formationthat occurred more efficiently around the Sun compared with themajority of solar twins. Furthermore, within this scenario, it seemsmore likely that the abundance patterns found are specifically relatedto the formation of terrestrial planets. In this work we analyzeabundance results from six large independent stellar abundance surveysto determine whether they confirm or reject this observational finding.We show that the elemental abundances derived for solar analogs inthese six studies are consistent with the trend suggested as a planet formation signature. The same conclusion isreached when those results are averaged heterogeneously. We alsoinvestigate the dependency of the abundances with first ionizationpotential (FIP), which correlates well with .A trend with FIP would suggest a different origin for the abundance patterns found, but we show that the correlation with is statistically more significant. We encourage similar investigationsof metal-rich solar analogs and late F-type dwarf stars, for which thehypothesis of a planet formation signature in the elemental abundancesmakes very specific predictions. Finally, we examine a recent paperthat claims that the abundance patterns of two stars hostingsuper-Earth like planets contradict the planet formation signaturehypothesis. Instead, we find that the chemical compositions of thesetwo stars are fully compatible with our hypothesis.Key words: stars: abundances - Sun: abundances - planetary systems
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