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. for a subset of these sources, those which are relatively bright at 25 um, we will also make full spectral scans with the sws grating. our sample has been selected to represent the earliest 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 pre-main-sequence evolution to be developed.
Instrument
LWS01
Temporal Coverage
1996-08-27T16:44:41Z/1997-03-03T09:30:53Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
