Fig. 10
Distribution of the differences in right ascension (left) and declination (right) between the Gaia DR1 positions of 2191 ICRF sources, normalised by the uncertainties of the Gaia data. The histograms leave out 97 sources with | Δα ∗ /σα ∗ | > 8 and 154 sources with | Δδ/σδ | > 8. The black curves are the expected centred normal distribution of unit standard deviation.
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