Radio-continuum study of the Nearby sculptor group galaxies. Part 1: NGC 300 at λ=20 cm

Timothy J. Galvin, Miroslav D. Filipović, Evan J. Crawford, Graeme Wong, Jeff L. Payne, Ain de Horta, Graeme L. White, Nick Tothill, Danica Drašković, Thomas G. Pannuti, Caleb K. Grimes, Benjamin J. Cahall, William C. Millar, Seppo Laine

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A series of new radio-continuum (λ=20 cm) mosaic images focused on the NGC 300 galactic system were produced using archived observational data from the VLA and/or ATCA. These new images are both very sensitive (rms =60 μJy) and feature high angular resolution (<10 ″). The most prominent new feature is the galaxy's extended radio-continuum emission, which does not match its optical appearance. Using these newly created images a number of previously unidentified discrete sources have been discovered. Furthermore, we demonstrate that a joint deconvolution approach to imaging this complete data-set is inferior when compared to an immerge approach.

Original languageEnglish
Pages (from-to)133-142
Number of pages10
JournalAstrophysics and Space Science
Volume340
Issue number1
DOIs
Publication statusPublished - Jul 2012
Externally publishedYes

Keywords

  • Galaxies: general
  • Galaxies: NGC 300
  • Radio continuum: galaxies

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