Integrated intensity (moment 0) map of IRAS 04296+2923 (upper left) and HI 0432+2926 (lower right). The maps are derived from the VLA–D array H I data using SOFIA. The white contours show the 3σ H I emission from the same VLA–D data, identical to those displayed in Fig. 1. Region 11 (green box) covers an area of 3′ × 2′, while region 10 (green circle) covers 100″ × 100″. The corresponding H I spectral profiles extracted from these regions are presented in Fig. A.7, and the fit parameters are summarized in Table A.1.