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

July 2012 • 2012Ap&SS.340..133G

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

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.

Links

• PREPRINT http://arxiv.org/abs/1203.1688
• DATA https://irsa.ipac.caltech.edu/bibdata/2012/G/2012Ap&SS.340..133G.html
• ELECTR https://doi.org/10.1007%2Fs10509-012-1044-3