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Discovery of HI gas in a young radio galaxy at z = 0.44 using the Australian square kilometre array pathfinder

Allison, J.R.; Sadler, Elaine M; Moss, V.A.; Whiting, M.T.; Hunstead, Richard; Curran, S.J.; Croom, Scott M; Glowacki, M.; Morganti, Raffaella; Tzioumis, A K; Storey, M.; Sweetnam, T.; Troup, E.; Turner, B.; Tuthill, J.; Voronkov, M.A.; Westmeier, T.; Wilson, C.D.; Zwaan, M A; Pracy, Michael; Shabala, Stanislav S; Zwaan, M.A.; Allen, G; Amy, S.W.; Axtens, P.; Ball, Lewis; Bannister, Keith; Barker, S.; Bell, M.; Bock, D. C.-J.; Bolton, R.; Bowen, M.; Boyle, B.; Braun, R.; Broadhurst, S.; Brodrick, D.; Brothers, M.; Brown, A.; Bunton, John D.; Cantrall, C.; Chapman, J.; Cheng, W.; Chippendale, A.P.; Chung, Y.; Cooray, F.; Cornwell, T.; DeBoer, D.; Diamond, P.; Edwards, P G; Ekers, Ronald D; Feain, I; Ferris, Richard H; Forsyth, R.; Gough, R; Grancea, A.; Gupta, N.; Guzman, J.C.; Hampson, G.; Harvey-Smith, L.; Haskins, C.; Hay, S.; Hayman, D.B.; Heywood, I.; Hotan, A.W.; Hoyle, S.; Humphreys, B.; Indermuehle, B.T.; Jacka, C.; Jackson, Carole A; Jackson, S.; Jeganathan, K.; Johnston, S; Joseph, J.; Kendall, R.; Kesteven, M J; Kiraly, D.; Koribalski, Baerbel S; Leach, M.; Lenc, Emil; Lensson, E.; Mackay, S.; Macleod, A.; Marquarding, M; Marvil, J.; McClure-Griffiths, Naomi; McConnell, D; Mirtschin, P.; Norris, R P; Neuhold, S.; Ng, A.; O’Sullivan, J.; Pathikulangara, Joseph; Pearce, S.; Phillips, C; Popping, A.; Qiao, R.Y.; Reynolds, J E; Roberts, P.; Sault, Robert J; Schinckel, A.; Serra, P.; Shaw, R.; Shields, M.; Shimwell, Timothy W


We report the discovery of a new 21-cm HI absorption system using commissioning data from the Boolardy Engineering Test Array of the Australian Square Kilometre Array Pathfinder (ASKAP). Using the 711.5-1015.5 MHz band of ASKAP we were able to conduct a blind search for the 21-cm line in a continuous redshift range between z = 0.4 and 1.0, which has, until now, remained largely unexplored. The absorption line is detected at z = 0.44 towards the GHz-peaked spectrum radio source PKS B1740-517 and...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stv1532


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