A kinematic study of Orion Nebula in the emission line forbidden S II 6731 A

Details A kinematic study of Orion Nebula in the emission line forbidden S II 6731 A A kinematic study of Orion Nebula in the emission line forbidden S II 6731 A

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.204..205r&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 204, no. 2, p. 205-212.

Astronomy and Astrophysics

Astrophysics

1

Emission Spectra, Interstellar Gas, Molecular Clouds, Orion Nebula, Radial Velocity, Astronomical Interferometry, Ionized Gases, Stellar Evolution, Stellar Mass Ejection

Scientific paper

Fabry-Perot interferometric observations were made on Orion Nebula in the forbidden emission line S II 6731 A line. The observed field is about 6 x 6 arcmin on the face of the nebula and it covers the Orion Trapezium stars and the nearby regions. The relative line of sight velocities which denote the average deviations from the systematic velocities were derived at a large number of points in the nebula. Velocities were found to show a gradient towards the north of Trapezium stars. Large blue shifted velocities were found at the nebular boundaries, probably associated with the ionization fronts. The observed velocities, in general, show agreement with the flow model of Balick, Gull and Smith (1980).

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