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

Astronomy and Astrophysics – Astronomy

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Astronomical Spectroscopy, Emission Spectra, H Ii Regions, Infrared Spectra, Spectrophotometry, H Lines, Helium, Hydrogen Ions, Line Spectra, Neutral Gases, Radiant Flux Density, Spectral Line Width

Scientific paper

Spectrophotometry of the H II region G 333.6-0.2 with a resolution of approximately 100 shows strong emission lines of hydrogen and helium superimposed on a continuum. Spatial variations in the equivalent widths of the lines suggest the presence of very hot (at least 600 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.

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