Continuum emission at 202.7 GHz toward the three sources. The map shows emission above 3σ_rms with white contours at 5σ_rms, 10σ_rms, and 30σ_rms. The maps are presented on same linear scale. The black cross marks the peak location and the grey arrows indicate the potential direction of outflows which may be perturbing the dust distribution. For BHR71–IRS1 the grey arrows indicates the outflow direction presented by Benedettini et al. (2017) and Yang et al. (2017).