CMDs and spatial positions of the point sources detected in the images of the UCHVC AGC 268071. A stellar overdensity with a statistical significance of 97.30% is detected ∼9′ from the centroid of the H i source. The top-left plot shows the locations of the stars detected in the field (gray points), the stars selected by the CMD filter (red points), the H i ellipse from ALFALFA (green ellipse), the 3′ radius detection circle (magenta), and a reference circle of the same size placed at a random location in the outskirts of the field. The smoothed surface density map of the CMD-filtered stars is shown on the bottom left, with the detection and reference circles and H i ellipse marked as in the top-left plot. The CMD in the top right shows all of the sources in the field (black points), the CMD filter (blue solid line), and the CMD-selected stars (red points). The CMDs for objects located with the detection circle and comparison (reference) circle appear on the bottom right.