Gaia data showing selection criteria S1 and S2. The black background points show the M1 model, the open yellow circles are Gaia objects that are consistent with the CCP modelled distribution (i.e. after the S1 selection was applied) and with the modelled proper motion values (S2 selection). The full orange points show the Gaia objects that in addition to this, are also consistent with the spatial distribution of the M1 model (S2 selection). Top panel: diagram of the CCP method. Bottom panel: proper motion distribution in equatorial spherical coordinates, RA and Dec, in physical km s−1 units.
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