Giant-planet hosts preferentially formed in the metal-rich inner Galaxy and later migrated, while rocky-only systems are less centrally concentrated and show smaller radial excursions.
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Probing the origins. III. Exoplanet demographics across Galactic birth radii
Giant-planet hosts preferentially formed in the metal-rich inner Galaxy and later migrated, while rocky-only systems are less centrally concentrated and show smaller radial excursions.