The Phoenix survey: The pairing fraction of faint radio sources

A. E. Georgakakis*, B. Mobasher, L. Cram, A. Hopkins

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    The significance of tidal interactions in the evolution of the faint radio population (sub-mJy) is studied using a deep and homogeneous radio survey (1.4GHz), covering an area of 3.14deg2 and complete to a flux density of 0.4 mJy. Optical photometric and spectroscopic data are also available for this sample. A statistical approach is employed to identify candidate physical associations between radio sources and optically selected 'field' galaxies. We find an excess of close pairs around optically identified faint radio sources, albeit at a low significance level, implying that the pairing fraction of the sub-mJy radio sources is similar to that of 'field' galaxies (at the same magnitude limit) but higher than that of local galaxies.

    Original languageEnglish
    Pages (from-to)L15-L19
    Number of pages5
    JournalMonthly Notices of the Royal Astronomical Society
    Issue number1
    Publication statusPublished - 21 Nov 1999


    • Galaxies: active
    • Galaxies: starburst - Cosmology: observations
    • Radio continuum: galaxies


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