Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...286..509h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 286, Nov. 15, 1984, p. 509-516. Research supported by the Alfred P. Sloan F
Astronomy and Astrophysics
Astronomy
65
Cosmic Gases, Emission Spectra, Radio Galaxies, Radio Sources (Astronomy), Astronomical Maps, Flow Velocity, Gas Jets, H Beta Line, Line Spectra, Radio Spectra
Scientific paper
Sets of spectroscopic and imaging CCD emission line data were obtained of the gas in the radio lobe regions of the celestial object SC 171. The optical scans were made at Kitt Peak in 1982-83 and radio data were gathered with the VLA at 2, 6 and 20 cm wavelengths in 1983. The brightest gas emission lines resided alongside knots of the bright radio regions, which were composed of plasma. The gas spectra were akin to those emitted by active nuclei. The gas may be cooling and entrained in boundary layers around the radio sources, which are highly distorted and Faraday depolarized where optical line spectra and radio emissions overlap. Finally, the gas velocities showed a velocity range of up to 1000 km/sec, a dispersion supportive of a model of entrained turbulent flow.
Heckman Timothy M.
Miley George K.
van Breugel Wil J. M.
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