Radio-continuum study of the Nearby sculptor group galaxies. Part 1: NGC 300 at λ=20 cm
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.
- Publication:
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Astrophysics and Space Science
- Pub Date:
- July 2012
- DOI:
- 10.1007/s10509-012-1044-3
- arXiv:
- arXiv:1203.1688
- Bibcode:
- 2012Ap&SS.340..133G
- Keywords:
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- Galaxies: general;
- Galaxies: NGC 300;
- Radio continuum: galaxies;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 13 pages, 12 figures, accepted to APSS, new version to correct the missing references