After age-mass matching and bias correction, host and non-host stars are chemically similar overall, but Earth-like and sub-Neptune hosts show opposite O, Mg, and Si trends, and sub-Neptune hosts are less active and born closer to the Galactic center.
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Host--Non-host Differences in Stellar Chemistry, Activity, and Birth Radius: Hints of Distinct Formation Environments for Earth-like Planets and Sub-Neptunes
After age-mass matching and bias correction, host and non-host stars are chemically similar overall, but Earth-like and sub-Neptune hosts show opposite O, Mg, and Si trends, and sub-Neptune hosts are less active and born closer to the Galactic center.