Fig. 3
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PMa sensitivity limits (grey) computed for the seven targets present in both the HIPPARCOS and Gaia EDR3 catalogues (see Sect. 3.3 for details). The shaded region corresponds to the 1 σ uncertainty. The dashed blue line indicates the semi-major axis corresponding to the observing window for the Gaia DR3 mission δtGDR3 = 1038d.
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