Abstract
We show initial results from a survey of the mm to far-IR continuum spectra of ∼ 30 YSO’s known to be exciting Herbig-Haro objects. The data are also compared with line intensities of C18O and H2CO. We include in this analysis results from other sub-mm continuum surveys of compact HII regions, T-Tauri stars and class 0 YSO’s. The results provide a statistical sample of the long-wavelength dust spectra of ∼ 60 Young Stellar Objects. Data are displayed on mm to FIR colour-colour diagrams, with the aim of trying to discriminate between different stages of star formation through general spectral characteristics, rather than detailed model fits to individual sources.
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