Macroscopic motions in the Orion nebula

Details Macroscopic motions in the Orion nebula Macroscopic motions in the Orion nebula

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92...22b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Feb.-Mar. 1980, p. 22-31.

Astronomy and Astrophysics

Astronomy

26

Hydrogen Clouds, Orion Nebula, Stellar Motions, Astronomical Models, Data Reduction, Fabry-Perot Interferometers, Forbidden Bands, Gas Flow, High Resolution, Ionized Gases, Line Spectra, Spectral Resolution, Spectrum Analysis

Scientific paper

The paper reports on high spectral resolution scans of the lines of H-alpha, He I 5876 A, forbidden line O III 5007 A, forbidden line N II 6584 A, forbidden line S II 6717 A, and forbidden line O I which have been made at a grid of 13 points in the Orion nebula using Fabry-Perot interferometer and a 2-arcmin-diameter circular aperture. It is found that the velocities of forbidden line O III, He I, and H-alpha as well as H76-alpha reported previously are generally more negative that the velocities of the forbidden lines N II, S II, and O I by about 10 km/s. Finally, a flow control model is proposed for the nebula.

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