A new 1.4 GHz radio continuum map of the sky south of declination +25°

M.R. Calabretta, Lister Staveley-Smith, D.G. Barnes

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    Abstract

    Archival data from the HI Parkes All-Sky Survey (HIPASS) and the HI Zone of Avoidance (HIZOA) survey have been carefully reprocessed into a new 1.4 GHz continuum map of the sky south of δ = +25°. The wide sky coverage, high sensitivity of 40 mK (limited by confusion), resolution of 14.4 arcmin (compared to 51 arcmin for the Haslam et al. 408 MHz and 35 arcmin for the Reich et al. 1.4 GHz surveys), and low level of artefacts make this map ideal for numerous studies, including: merging into interferometer maps to complete large-scale structures; decomposition of thermal and non-thermal emission components from Galactic and extragalactic sources; and comparison of emission regions with other frequencies. The new map is available for download. © 2014 Astronomical Society of Australia.
    Original languageEnglish
    Pages (from-to)1-28
    JournalPublications of the Astronomical Society of Australia
    Volume31
    Issue number1
    DOIs
    Publication statusPublished - 2014

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