Fig. 28.
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Gaia proper motion vs. catWISE W1 − W2 colour for all sources in the qso_candidates table (top) and the subset with classlabel_dsc_joint = quasar (bottom). Regions around the LMC and SMC are excluded. The colour scale shows the density of sources on a log scale relative to the peak density (densities 1000 times lower than the peak are not shown).
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