Compact steep-spectrum sources from the S4 sample
Abstract
We present the results of 5-GHz observations with the VLA A-array of a sample of candidate Compact Steep Spectrum sources (CSSs) selected from the S4 survey. We also estimate the symmetry parameters of high-luminosity CSSs selected from different samples of radio sources, and compare these with the larger sources of similar luminosity to understand their evolution and the consistency of the CSSs with the unified scheme for radio galaxies and quasars. The majority of CSSs are likely to be young sources advancing outwards through a dense asymmetric environment. The radio properties of CSSs are found to be consistent with the unified scheme, in which the axes of the quasars are observed close to the line of sight, while radio galaxies are observed close to the plane of the sky.
Cite
@article{arxiv.astro-ph/0009175,
title = {Compact steep-spectrum sources from the S4 sample},
author = {D. J. Saikia and S. Jeyakumar and C. J. Salter and P. Thomasson and R. E. Spencer and F. Mantovani},
journal= {arXiv preprint arXiv:astro-ph/0009175},
year = {2009}
}
Comments
accepted for publication in mnras; 8 pages, figure 1 with 21 images, and two additional figures; 2 tables