Two-micron line emission from the H II region G 333.6 – 0.2

Spectrophotometry of the H II region G333.6 – 0.2 with $$\lambda/\Delta\lambda \bumpeq100$$ shows strong emission lines of hydrogen and helium super-imposed on a continuum. Spatial variations in the equivalent widths of the lines suggest the presence of very hot ($$\geqslant600\enspace \text K$$) dust grains within the region. The shape of this very powerful H II region indicates that its dense ionized core is being continuously replenished from a reservoir of neutral gas.