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Fig. 3
Smoothed contours of the difference between the Hipparcos parallaxes and the proper-motion-based parallax (ϖHip − ϖpm) of the 54 Pleiades cluster members, with data taken from the original Hipparcos catalogue (1997). Thin contours are at intervals of 0.1 milli-arcseconds, thick contours at intervals of 1 milli-arcsecond.
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