Spatially integrated spectroscopy of Galactic HII regions.

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Scientific paper

We present optical-NIR spatially integrated spectroscopy of 7 Galactic HII regions: Carina, M8, M20, RCW6, RCW60, RCW107 and RCW110/111. The effect of the embedded ionizing stars' spectra on the nebular spectra is studied. The distribution of Balmer Equivalent Widths in the combined spectra (nebular plus stellar) is slightly stepper than in the pure nebular spectra. The comparison of this distribution in Extragalactic HII regions and HII/Starbust galaxies may yield a more accurate determination of the underlaying stellar absorption (or emission!) affecting the observed Balmer lines used to derive extinction and other physical parameters of the emitting regions and associated stellar clusters.

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