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==> In this proposal, more time is being requested for MGRIFFIN.MG_FIRS
==> This proposal requests an upgrade from Priority 3 for MGRIFFIN.MG_FIRS
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We propose to use the LWS grating spectrometer to measure the
continuum spectra of a sample of cold IRAS sources over the
45-200 um range. Our sample has been selected to represent the
earliest (e.g., Class 0 and Class I) stages of low-mass star formation.
These observations, combined with ground-based submillimetre data,
will allow the overall spectral energy distribution to be measured,
the masses and temperatures of the cores to be found, and a coherent
evolutionary picture of early protostellar evolution to be developed.