| 23rd of January 2019 |
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| ASKAP images of the NGC 7232 galaxy group (Part 3) |
| by Karen Lee-Waddell |
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Lee-Waddell et al. (2019) have used the Australian Square Kilometre
Array Pathfinder (ASKAP) to detect HI in the NGC 7232 galaxy group.
The observations were taken on behalf of WALLABY (the Widefield ASKAP
L-band Legacy All-sky Blind surveY) using 12 ASKAP antennas during
various commissioning and Early Science phases of the array. ASKAP
total HI intensity contours superimposed on DSS2 optical images (left
panels) and ASKAP HI velocity maps (right panels) of individual
galaxies located in the NGC 7232 group. Five of these galaxies have
been newly detected in HI by ASKAP. These maps are a testament of
ASKAP’s ability - even during the early stages of the array - to
produce wide-field images with the spatial and spectral resolution
required to detect and possibly resolve low-mass HI features.
Reference: K. Lee-Waddell, B.S. Koribalski, T. Westmeier, A. Elagali, B.-Q. For, D. Kleiner, J.P. Madrid, A. Popping, T. N. Reynolds, J. Rhee, P. Serra, L. Shao, L. Staveley-Smith, J. Wang, M.T. Whiting, O.I. Wong, J.R. Allison, S. Bhandari, J.D. Collier, G. Heald, J. Marvil, S.M. Ord, 2019, MNRAS, in press (arXiv:1901.00241) |