Velocity channel maps of the ¹²CO J = 2–1 emission in the region of the proto BD candidate J041757-B, from ~0 to 15 km s^-1 with a spacing of 0.8 km s^-1. The position of J041757-B is indicated by the cross mark. The LSR velocity is indicated in the upper left corner of each panel. The contour level starts from 2σ, with σ = 0.09 Jy/beam. The arrow indicates the expected outflow direction of about 40°, as suggested in Palau et al. (2012). The synthesized beam is shown in the bottom left corner of the first panel.