Fig. 1
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Known exoplanets as a function of their radius and period from the NASA Exoplanet Archive (Akeson et al. 2013). Targets analysed in this work and previous GIANO-B papers (Guilluy et al. 2020, 2023; Fossati et al. 2022) are highlighted. The marker colour reflects the He I absorption signal we found in this work. Circles and squares represent detections and non-detections, respectively. The non-detections are reported at the 1σ level.
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