OH line and radio continuum emission overlaid on SDSS R-band grey image. Green: circular region for generating the emission of the OH line from GMRT-central data, beam size of these sources, and parameters from Table B.1. Magenta: contour of OH line emission. The velocities range of the OH line emission: AGC 115713: 50 884.8–51 155.4 km s⁻¹ (see Fig. 2); contour levels: 3σ (0.001 Jy beam⁻¹) × (1 2 4 ...). For AGC 249507: 53 336.1–53 665.1 km s⁻¹, contour levels: 3σ (0.000592 Jy beam⁻¹) × (1 2 4 ...). Blue: L-band radio continuum emission and parameters from Table 1.