Abstract
UV spectra of H-H 7 & 11 (L1450, NGC1333) and H-H 29 (L1551) have been observed with both the IUE long- and short- wavelength cameras. These data were obtained using long (≤ 12 hours) exposure shifts over a period of three years. As expected, the S/N quality of the raw data is relatively poor and a special IUE extraction procedure has been developed within the MIDAS environment to deal with this problem. The data on H-H 7 & 11 confirm the very low excitation state of these objects, although the absence of Lyman band H2 line emission is somewhat enigmatic. The continuum emission from HH 29 reveals considerable structure which is inconsistent with a pure 2-photon model for this source. The interpretation of these results are discussed in the light of conflicting optical data.
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