VLBI Observations of a Complete Sample of Radio Galaxies V. 3C346 and 4C31.04: two Unusual CSS Sources

Abstract

We present observations at 1.7 and 8.4 GHz of two Compact Steep Spectrum (CSS) sources from a complete sample of low-intermediate power radio galaxies. 3C346 shows an asymmetric structure with a one-sided ``jet'' and ``hot spot''. Present observations suggest that the classification of this source as a CSS is inappropriate, and that it is a common radio galaxy at a small angle to the line of sight. Its properties are in agreement with the predictions of unified schemes models. 4C31.04 shows more complex structure with the possibility of a centrally located flat spectrum core in between two close lobes. We suggest that this source could be a low redshift Compact Symmetric Object.

15 pages, LATEX, uuenconde ps figures To be published in the Astrophysical Journal, October 20th issue

Cited by in corpus (21)

• VLBI Observations of a Complete Sample of Radio Galaxies. 10 Years Later
• Interactions of a Light Hypersonic Jet with a Non-Uniform Interstellar Medium
• Probing radio source environments via HI and OH absorption
• On the origin of X-ray emission in some FR Is: ADAF or jet?
• VLBI Observations of a Complete Sample of Radio Galaxies: VIII - Proper Motion in 3C338
• Lobe Advance Velocities in the Extragalactic Compact Symmetric Object 4C 31.04
• Jets blowing bubbles in the young radio galaxy 4C 31.04
• X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346
• Optical Polarimetry of the Jets of Nearby Radio Galaxies: I. The Data
• Flat-spectrum symmetric objects with ~1 kpc sizes I. The candidates
• Unifying B2 radio galaxies with BL Lac objects
• A Multiwavelength Spectral and Polarimetric Study of the Jet of 3C 264
• Observational Properties of Jets in Active Galactic Nuclei
• VLBA Observations of HI in the Archetype Compact Symmetric Object B2352+495
• The Nuclear Region of Low Luminosity Flat Radio Spectrum Sources. II. Emission-Line Spectra
• The magnetic field and geometry of the oblique shock in the jet of 3C 346
• The X-ray emission of 3C 346 and its environment
• Radio polarimetry of compact steep spectrum sources at sub-arcsecond resolution
• Compact sources in the Bologna Complete Sample: high resolution VLA observations and optical data
• Turbulent circumnuclear disc and cold gas outflow in the newborn radio source 4C 31.04
• Spatial variations of magnetic field along active galactic nuclei jets on sub-pc to Mpc scales