1. ATLAS, and Wide-Angle Tail Galaxies in ATLAS.
- Author
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Mao, Minnie, Sharp, Rob, Saikia, D., Norris, Ray, Johnston-Hollitt, Melanie, Middelberg, Enno, and Lovell, Jim
- Subjects
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GALAXY clusters , *RADIO telescopes , *REDSHIFT , *ASTRONOMICAL observations , *ASTRONOMICAL photometry , *COSMIC magnetic fields , *RADIO galaxies - Abstract
Using the Australia Telescope Compact Array (ATCA), ATLAS (Australia Telescope Large Area Survey) is imaging two fields totalling 7 square degrees down to 10 μJy beam at 1.4 GHz. We have found 6 wide-angle tail galaxies (WATs), 4 of which have sufficient data to identify associated galaxy overdensities. The largest WAT, at a red-shift of 0.22, appears to be associated with an overdensity of galaxies that is spread over an unusually large extent of 12 Mpc, with a velocity range of 4500 km s. Here we present the WATs in ATLAS and discuss the implications of these observations for future large-scale radio surveys such as ASKAP-EMU. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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