Mm/Submm images of Herbig-Haro energy sources and candidate protostars

We present 450, 850 mum and 1300 mum images of regions with embedded candid ate protostars. Some of them are associated with HH objects (HH 7-11, HH 1- 2, HH 147, HH 111, HH 108) and have been previously identified in the cours e of a 1300 mum survey. Other regions were taken from the IRAS PSC (04239+2 436, 04368+2557, 20050+2720, 20386+6751, 22134+5834, 23011+6126). The new m m/submm images show the detailed structure of the regions some of which con tain new compact sources as well as extended emission features. The inferre d mm/submm fluxes are combined with IRAS data in order to derive the temper ature of the associated dust, its mass and the re-radiated luminosity. Taki ng the ratio of FIR-to-submm luminosity as an indicator for the evolutionar y stage, we find that 15 out of 17 sources have L-FIR/L-smm < 200, indicati ng that most objects are probably genuine protostars. For the first time, w e detect dust emission associated with HH objects themselves, H-2 and CO fl ows which we interpret as density enhancements swept up by the ejected mate rial.