Fig. 2.

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Parallax PDF for the Alpha Persei members (taken from Gaia Collaboration 2018b). The modelled PDF is shown in gray and a superimposed histogram in blue. The two magenta vertical dotted lines point the 2.5th and 97.5th percentiles; the two cyan vertical dashed lines point the quartiles and the the red vertical line shows the mode of the PDF. The small vertical black lines below the horizontal axis (below y = 0.0) show the parallaxes of each source.
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