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Fig. 9

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Near-infrared color-magnitude diagrams showing AF Lep b (blue) and other young imaged companions (other β Pic moving group members in black, others in green) compared to the field-gravity (circles), low-gravity (diamonds), and very low-gravity (stars) brown dwarfs, colored according to their spectral type. The HR 8799 planets are indicated by their letter. Evolutionary models interpolated to 24 Myr from the AMES-Cond (blue; Chabrier et al. 2000) and AMES-Dusty (purple; Baraffe et al. 2003) grids, from which masses were derived, are plotted in the left panel. Companion photometry from Patience et al. (2010), Bonnefoy et al. (2014), Maire et al. (2016), Zurlo et al. (2016), Chauvin et al. (2017), Chilcote et al. (2017), Samland et al. (2017), Chauvin et al. (2018), Langlois et al. (2021), Ward-Duong et al. (2021), and Brown-Sevilla et al. (2023).

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