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Fig. B.1

image

Results of the random source matching simulations. The number of VISTA catalog matches is shown as a function of the rotation angle for the X-ray source positions. The black line shows the results when using the full VISTA catalog, and the colored lines show the results when using various restricted versions of the VISTA catalog with different magnitude limits. The thick asterisks mark the number of matches found with the original (i.e., un-rotated) X-ray source catalog.

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