Top panel: inferred fractional mass to ratio of radii for the α Cen system, obtained through various asteroseismic calibrations (see details in Tables 2 and 3). The calibrations are represented by different symbols (see legend). Cyan and blue symbols correspond to calibrations made with the Δν − ⟨δν₀⟩ combination as seismic constraints: cyan for mass and effective temperature as non-seismic constraints, blue for fractional mass and radius ratio instead. Magenta, black, and green symbols respectively correspond to calibrations with r₁₀, r₀₂, and r₁₃ used as seismic constraints. Open symbols indicates that no overshooting was included in the stellar models, while filled symbols denotes cases where models are computed with overshooting. The red cross and the dashed and dot-dashed lines respectively give the values inferred from the resolution of the orbital motion by K16 and K17, and the limits of the 1σ and 3σ error box on the K16 and K17 determinations. The red star indicates the parameters obtained from the P16 orbital solution. Bottom left panel: same as top panel, but for the inferred mass and radius of α Cen A. Bottom right panel: same as top panel, but for the inferred mass and radius of α Cen B.