Koribalski, Bärbel S.Bärbel S.KoribalskiStaveley-Smith, L.L.Staveley-SmithWestmeier, T.T.WestmeierSERRA, PaoloPaoloSERRASpekkens, K.K.SpekkensWong, O.~I.O.~I.WongLee-Waddell, K.K.Lee-WaddellLagos, C.~D.~P.C.~D.~P.LagosObreschkow, D.D.ObreschkowRyan-Weber, E.~V.E.~V.Ryan-WeberZwaan, M.M.ZwaanKilborn, V.V.KilbornBekiaris, G.G.BekiarisBekki, K.K.BekkiBigiel, F.F.BigielBoselli, A.A.BoselliBosma, A.A.BosmaCatinella, B.B.CatinellaChauhan, G.G.ChauhanCluver, M.~E.M.~E.CluverColless, M.M.CollessCourtois, H.~M.H.~M.CourtoisCrain, R.~A.R.~A.Crainde Blok, W.~J.~G.W.~J.~G.de BlokDénes, H.H.DénesDuffy, A.~R.A.~R.DuffyElagali, A.A.ElagaliFluke, C.~J.C.~J.FlukeFor, B. -Q.B. -Q.ForHeald, G.G.HealdHenning, P.~A.P.~A.HenningHess, K.~M.K.~M.HessHolwerda, B.~W.B.~W.HolwerdaHowlett, C.C.HowlettJarrett, T.T.JarrettJones, D.~H.D.~H.JonesJones, M.~G.M.~G.JonesJózsa, G.~I.~G.G.~I.~G.JózsaJurek, R.R.JurekJütte, E.E.JütteKamphuis, P.P.KamphuisKarachentsev, I.I.KarachentsevKerp, J.J.KerpKLEINER, DANEDANEKLEINERKraan-Korteweg, R.~C.R.~C.Kraan-KortewegLópez-Sánchez, Á. R.Á. R.López-SánchezMadrid, J.J.MadridMeyer, M.M.MeyerMould, J.J.MouldMurugeshan, C.C.MurugeshanNorris, R.~P.R.~P.NorrisOh, S. -H.S. -H.OhOosterloo, T.~A.T.~A.OosterlooPopping, A.A.PoppingPutman, M.M.PutmanReynolds, T.~N.T.~N.ReynoldsRhee, J.J.RheeRobotham, A.~S.~G.A.~S.~G.RobothamRyder, S.S.RyderSchröder, A.~C.A.~C.SchröderShao, LiLiShaoStevens, A.~R.~H.A.~R.~H.StevensTaylor, E.~N.E.~N.Taylorvan̂A der Hulst, J.~M.J.~M.van̂A der HulstVerdes-Montenegro, L.L.Verdes-MontenegroWakker, B.~P.B.~P.WakkerWang, J.J.WangWhiting, M.M.WhitingWinkel, B.B.WinkelWolf, C.C.Wolf2025-03-132025-03-1320200004-640Xhttp://hdl.handle.net/20.500.12386/36737The Widefield ASKAP L-band Legacy All-sky Blind surveY (wallaby) is a next-generation survey of neutral hydrogen (H i) in the Local Universe. It uses the widefield, high-resolution capability of the Australian Square Kilometer Array Pathfinder (ASKAP), a radio interferometer consisting of -m dishes equipped with Phased-Array Feeds (PAFs), located in an extremely radio-quiet zone in Western Australia. wallaby aims to survey three-quarters of the sky () to a redshift of , and generate spectral line image cubes at ∼30 arcsec resolution and ∼1.6 mJy beam−1 per 4 km s−1 channel sensitivity. ASKAP’s instantaneous field of view at 1.4 GHz, delivered by the PAF’s 36 beams, is about 30 sq deg. At an integrated signal-to-noise ratio of five, wallaby is expected to detect around half a million galaxies with a mean redshift of (∼200 Mpc). The scientific goals of wallaby include: (a) a census of gas-rich galaxies in the vicinity of the Local Group; (b) a study of the H i properties of galaxies, groups and clusters, in particular the influence of the environment on galaxy evolution; and (c) the refinement of cosmological parameters using the spatial and redshift distribution of low-bias gas-rich galaxies. For context we provide an overview of recent and planned large-scale H i surveys. Combined with existing and new multi-wavelength sky surveys, wallaby will enable an exciting new generation of panchromatic studies of the Local Universe. — First results from the wallaby pilot survey are revealed, with initial data products publicly available in the CSIRO ASKAP Science Data Archive (CASDA).STAMPAenArticle10.1007/s10509-020-03831-4https://link.springer.com/article/10.1007/s10509-020-03831-4FIS/05 - ASTRONOMIA E ASTROFISICA