A 10.5-GHz recombination line map of the W3 complex

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Maps, Centimeter Waves, H Alpha Line, Hydrogen Recombinations, Radial Velocity, Radio Astronomy, Electron Energy, Hydroxyl Emission, Signal To Noise Ratios, Spectral Line Width, Spectrum Analysis

Scientific paper

Observations of the W3 region have been made at 10.5 GHz with a resolution of 2.8 arcmin. They consist of a continuum map of the whole area, and 85 alpha recombination line observations of H, He and C over the most intense regions of W3 and W3N. A narrow H85 alpha line attributed to H I is found in the core of W3, and an upper limit is set for the X85 alpha line attributed to heavy elements. Contour maps of radial velocity, hydrogen line width and electron temperature are presented, and the relationship to other observations of the area is discussed.

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