FIRST-based survey of Compact Steep Spectrum sources I. MERLIN images of arc-second scale objects

Details FIRST-based survey of Compact Steep Spectrum sources I. MERLIN images of arc-second scale objects FIRST-based survey of Compact Steep Spectrum sources I. MERLIN images of arc-second scale objects

2001-12-21

arxiv.org/abs/astro-ph/0112511v2

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures, A&A in press

Scientific paper

10.1051/0004-6361:20020532

Compact Steep Spectrum (CSS) sources are powerful extragalactic radio sources with angular dimensions of the order of a few arcseconds or less. Such a compactness is apparently linked to the youth of these objects. The majority of CSSs investigated so far have been known since the early 1980s. This paper is the first in a series where we report the results of an observational campaign targeted on a completely new sample of CSSs which are significantly weaker than those investigated before. The ultimate goal of that campaign is to find out how ``weak'' CSSs compare to ``strong'', classical ones, especially with regard to the morphologies. Here we present an analysis of morphological and physical properties of five relatively large sources based on MERLIN observations at 1.6 and 5 GHz.

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