Spatial distribution of the VPHAS+ stars in the NW-VMR region, plotted as a two-dimensional stellar-density histogram using a binning of 0̣̊02 × 0̣̊02 and a seven-level color-coded scale such that high source densities (45 per bin) are dark green and the lowest densities (one per bin) are blue. Objects with Hα excesses are drawn as magenta circles.
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