Abstract:
Star forming regions associated with IRAS 19181+1349, 20255+3712, 20178+4046 and 10049+5657 have been mapped simultaneously in two far infrared bands (λeff ~ 130 and 210 µm), using TIFR 1m balloon borne telescope with liquid 3He cooled bolometer arrays. HIRES processed IRAS maps at 12, 25, 60 and 100 µm have been compared with ours. The TIFR maps show much more structural details due to their superior angular resolution. Detail radiation transfer modelling has been carried out for each of these sources and compared with observed spectral energy distributions.