Journal of astrophysics and astronomy | |
ATLAS, and Wide-Angle Tail Galaxies in ATLAS | |
Jim E. J. Lovell3  Enno Middelberg5  Rob Sharp1  Melanie Johnston-Hollitt2  D. J. Saikia3 44  Minnie Y. Mao1 2 33  Ray P. Norris4  | |
[1] Australian Astronomical Observatory, Epping, NSW, 1710, Australia.$$;Victoria University of Wellington, Wellington, New Zealand.$$;University of Tasmania, Hobart, 7001, Australia.$$;CSIRO Australian Telescope National Facility, Epping, NSW, 1710, Australia.$$;Ruhr-Universität Bochum, 44801 Bochum, Germany.$$ | |
关键词: Galaxies: clusters: general; galaxies: active; galaxies: general; radio continuum: galaxies; galaxies: distances and red-shifts.; | |
DOI : | |
学科分类:天文学(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Using the Australia Telescope Compact Array (ATCA), ATLAS (Australia Telescope Large Area Survey) is imaging two fields totalling 7 square degrees down to 10 ðœ‡Jy 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 12Mpc, 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.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040493682ZK.pdf | 510KB | download |