The kinematical structure of the bipolar nebula S106

Details The kinematical structure of the bipolar nebula S106 The kinematical structure of the bipolar nebula S106

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...113..142s&link_type=abstract

Astronomy and Astrophysics, vol. 113, no. 1, Sept. 1982, p. 142-149.

Astronomy and Astrophysics

Astrophysics

70

Astronomical Spectroscopy, Kinematics, Nebulae, Emission Spectra, H Alpha Line, H Ii Regions, Radial Velocity, Spectral Line Width, Stellar Winds

Scientific paper

Observations of the red emission lines of the double-lobed H II region S106 are presented, obtained at a spectral resolution of 12 km/s and a spatial resolution of less than three arcesec. Radial velocity fields for the alpha hydrogen and the forbidden 6583 wavelength line of N II are shown, along with a digitized near-IR image tube photograph of S106 and intensity contour maps. The data indicate a clear positive excess of the mean radial velocity in the northern lobe compared with other areas of S106, while complex line splitting into two or more components is clearly detected everywhere in the southern lobe, except near the edges. Kinematic models are presented for the bipolar mass flow, the filled cone of the northern lobe, the expanding shell of the southern lobe, and the kinematics of the equatorial toroid. The nature of the lobes and the evolution of the bipolar structure are discussed.

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