Distribution of galaxies from the ZZW21 in the VVV Southern disk region. The galaxies from galXray sample are represented by red dots, the confirmed galaxies from the VVV NIRGC are in orange, the four galaxies in common between them are shown as blue diamonds, and galaxies from Schröder et al. (2019) as black dots. The center of the overdensities reported by Soto et al. (2022) are represented with a black “x” centered on a black dotted circle, which denotes the radius of each overdensity amplified by a factor of four. The A_V isocontours derived from the extinction maps of Schlafly & Finkbeiner (2011) are superimposed in a gray gradient with levels of 11, 15, 20, and 25 mag.