1203.1688 (Timothy J. Galvin et al.)

Radio-Continuum study of the Nearby Sculptor Group Galaxies. Part 1: NGC 300 at lambda = 20 cm    [PDF]

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

A series of new radio-continuum (lambda=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 microJy) 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.

View original: http://arxiv.org/abs/1203.1688