ASKAP HI imaging of the galaxy group IC 1459

Paolo Serra,Barbel S Koribalski,Virginia A Kilborn,J R Allison,S W Amy,Lewis Ball,Kym M Bannister,M E Bell,Douglas C J Bock,R J Bolton,Michael D Bowen,Brian J Boyle,S Broadhurst,D Brodrick,J D Bunton, J D Chapman,W Cheng,A P Chippendale, Yunhyung Chung, F R Cooray,T J Cornwell,David R Deboer,P J Diamond,R Forsyth,R G Gough,Nidhi Gupta,G A Hampson,L Harveysmith, Simon Hay,D B Hayman,I Heywood,A W Hotan,S Hoyle,Benjamin D Humphreys,Balthasar T Indermuehle,C E Jacka,Carole A Jackson,Susan K Jackson,Karthik B Jeganathan,S Johnston, J D Joseph,P Kamphuis, M O Leach,E Lenc,E Lensson, Spencer L Mackay,M Marquarding,J Marvil,N M Mccluregriffiths,D Mcconnell,Martin Meyer,Peter Mirtschin,S Neuhold,A Ng,R P Norris, John Osullivan,J Pathikulangara,S Pearce,C J Phillips,Attila Popping,R Y Qiao,J E Reynolds,P O Roberts,Robert J Sault,Antony Schinckel, Rodney Shaw,Timothy W Shimwell,Lister Staveleysmith,M Storey, A W Sweetnam,E R Troup,A K Tzioumis,M A Voronkov,Tobias Westmeier,M T Whiting,Christabel F Wilson,O I Wong,Xin Wu

Monthly Notices of the Royal Astronomical Society（2015）

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摘要

We present H I imaging of the galaxy group IC 1459 carried out with six antennas of the Australian Square Kilometre Array Pathfinder equipped with phased-array feeds. We detect and resolve H I in 11 galaxies down to a column density of ∼1020 cm−2 inside a ∼6 deg2 field and with a resolution of ∼1 arcmin on the sky and ∼8 km s−1 in velocity. We present H I images, velocity fields and integrated sp...

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关键词

galaxies: evolution,galaxies: ISM

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