Optical emission-line gas associated with the radio source 3C 277.3

Details Optical emission-line gas associated with the radio source 3C 277.3 Optical emission-line gas associated with the radio source 3C 277.3

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290..496v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 15, 1985, p. 496-500, 505-516. Research supported by the Alfred

Mathematics

Logic

149

H Alpha Line, Interstellar Gas, Optical Emission Spectroscopy, Radio Galaxies, Flux Density, Gas Jets, Morphology, Photoionization, Plasma Interactions, Polarization (Waves), Stellar Luminosity, Stellar Magnitude, Velocity Distribution

Scientific paper

The authors present the results of a detailed optical and radio investigation of the radio galaxy 3C 277.3. First, they have used the VLA to obtain radio maps at several wavelengths. Second, using a CCD on the 4 m telescope at KPNO they have obtained narrow-band images in sub-arcsecond seeing which show the detailed morphology of the line-emitting gas. Third, using long slit spectroscopes on the 4 m telescope, they have obtained kinematic information about the gas at various positions and in several position angles. Fourth, using an aperture spectroscope on the 2.3 m telescope of Steward Observatory, they have observed the southern jet in order to study the density and temperature of the line-emitting gas. These data demonstrate conclusively the existence of morphological and energetic relationships between the radio plasma and the emission-line gas. The authors discuss the observations in terms of twin radio jets which propagate through an inhomogeneous (cloudy) medium. The results support a picture in which the emission-line gas is local material which is excited and accelerated by the radio source.

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