Abstract:
High quality interferograms have been obtained on the H II region in the Orion Nebula in the emission line of (OIII) 5007 A using the high resolution imaging Fabry-Perot spectrometer. Velocity profiles were obtained for about 2000 spatial positions. Two velocity components, a narrow one with full width at half maximum (FWHM) of around 20 +/- 3 km/sec and a broad one with FWHM of around 50 +/- 3 km/sec are predominantly present in the profiles across the nebula