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Table 2

Cross-matching coordinates and parameters before and after the offset corrections.

Mean Δ(′′)1 Mean Δα(′′)2 Mean Δδ(′′)2 Mean Δ(′′)1 Mean Δα(′′)2 Mean Δδ(′′)2

(Subsample) (Hα) (U-excess)

Before correction 0.320 +0.248 +0.026 0.337 +0.274 +0.036
After correction 0.208 +0.130e-3 +0.011 0.199 +0.007 +0.003

Notes.

(1)

Mean position offset between X-ray COUP sources and both HST Manara et al. (2012) subsamples.

(2)

Mean right ascension and declination offsets for both sub-samples.

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