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Fig. C.2

image

Example of spectral, often non-uniform coverage, shown for the overdensity candidate (OC) associated with AzTEC18, confirmed to also yield a spectroscopic overdensity (see text for details). The left panel shows the galaxies with secure (filled symbols) and less secure (open symbols) spectroscopic redshifts in or outside the redshift range considered (2.92 <zOC ≤ 3.08), as listed in the legend. The circles illustrate radii of r = 1′, 5′, 10′. The panels on the right show the spectroscopic redshift distribution for galaxies within 5′ (top right) and 10′ (bottom right) from the overdensity candidate with secure (filled histogram) and less secure (open histogram) spectroscopic redshifts.

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