ATLAS, and Wide-Angle Tail Galaxies in ATLAS

Details ATLAS, and Wide-Angle Tail Galaxies in ATLAS ATLAS, and Wide-Angle Tail Galaxies in ATLAS

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011japa...32..585m&link_type=abstract

Journal of Astrophysics and Astronomy, Vol. 32, p. 585-588

Astronomy and Astrophysics

Astrophysics

3

Galaxies, Clusters, General—Galaxies, Active—Galaxies, General—Radio Continuum, Galaxies—Galaxies, Distances And Red-Shifts

Scientific paper

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 - 1 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 - 1. Here we present the WATs in ATLAS and discuss the implications of these observations for future large-scale radio surveys such as ASKAP-EMU.

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