WALLABY – an SKA Pathfinder H i survey

Bärbel S. Koribalski; L. Staveley-Smith; T. Westmeier; P. Serra; K. Spekkens; O. I. Wong; K. Lee-Waddell; C. D.P. Lagos; D. Obreschkow; E. V. Ryan-Weber; M. Zwaan; V. Kilborn; G. Bekiaris; K. Bekki; F. Bigiel; A. Boselli; A. Bosma; B. Catinella; G. Chauhan; M. E. Cluver; M. Colless; H. M. Courtois; R. A. Crain; W. J.G. de Blok; H. Dénes; A. R. Duffy; A. Elagali; C. J. Fluke; B. Q. For; G. Heald; P. A. Henning; K. M. Hess; B. W. Holwerda; C. Howlett; T. Jarrett; D. H. Jones; M. G. Jones; G. I.G. Józsa; R. Jurek; E. Jütte; P. Kamphuis; I. Karachentsev; J. Kerp; D. Kleiner; R. C. Kraan-Korteweg; R. López-Sánchez; J. Madrid; M. Meyer; J. Mould; C. Murugeshan; R. P. Norris; S. H. Oh; T. A. Oosterloo; A. Popping; M. Putman; T. N. Reynolds; J. Rhee; A. S.G. Robotham; S. Ryder; A. C. Schröder; Li Shao; A. R.H. Stevens; E. N. Taylor; J. M. van der Hulst; L. Verdes-Montenegro; B. P. Wakker; J. Wang; M. Whiting; B. Winkel; C. Wolf

doi:10.1007/s10509-020-03831-4

WALLABY – an SKA Pathfinder H i survey

Bärbel S. Koribalski^*, L. Staveley-Smith, T. Westmeier, P. Serra, K. Spekkens, O. I. Wong, K. Lee-Waddell, C. D.P. Lagos, D. Obreschkow, E. V. Ryan-Weber, M. Zwaan, V. Kilborn, G. Bekiaris, K. Bekki, F. Bigiel, A. Boselli, A. Bosma, B. Catinella, G. Chauhan, M. E. CluverM. Colless, H. M. Courtois, R. A. Crain, W. J.G. de Blok, H. Dénes, A. R. Duffy, A. Elagali, C. J. Fluke, B. Q. For, G. Heald, P. A. Henning, K. M. Hess, B. W. Holwerda, C. Howlett, T. Jarrett, D. H. Jones, M. G. Jones, G. I.G. Józsa, R. Jurek, E. Jütte, P. Kamphuis, I. Karachentsev, J. Kerp, D. Kleiner, R. C. Kraan-Korteweg, R. López-Sánchez, J. Madrid, M. Meyer, J. Mould, C. Murugeshan, R. P. Norris, S. H. Oh, T. A. Oosterloo, A. Popping, M. Putman, T. N. Reynolds, J. Rhee, A. S.G. Robotham, S. Ryder, A. C. Schröder, Li Shao, A. R.H. Stevens, E. N. Taylor, J. M. van der Hulst, L. Verdes-Montenegro, B. P. Wakker, J. Wang, M. Whiting, B. Winkel, C. Wolf

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The 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 36 × 12 -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 (− 90 ^∘< δ< + 30 ^∘) to a redshift of z≲ 0.26 , 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 z∼ 0.05 (∼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).

Original language	English
Article number	118
Journal	Astrophysics and Space Science
Volume	365
Issue number	7
DOIs	https://doi.org/10.1007/s10509-020-03831-4
Publication status	Published - 1 Jul 2020

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Koribalski, B. S., Staveley-Smith, L., Westmeier, T., Serra, P., Spekkens, K., Wong, O. I., Lee-Waddell, K., Lagos, C. D. P., Obreschkow, D., Ryan-Weber, E. V., Zwaan, M., Kilborn, V., Bekiaris, G., Bekki, K., Bigiel, F., Boselli, A., Bosma, A., Catinella, B., Chauhan, G., ... Wolf, C. (2020). WALLABY – an SKA Pathfinder H i survey. Astrophysics and Space Science, 365(7), Article 118. https://doi.org/10.1007/s10509-020-03831-4

@article{7f340d9f88d74db4b22294c7d4a1fee4,

title = "WALLABY – an SKA Pathfinder H i survey",

abstract = "The 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 36 × 12 -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 (− 90 ∘< δ< + 30 ∘) to a redshift of z≲ 0.26 , and generate spectral line image cubes at ∼30 arcsec resolution and ∼1.6 mJy beam−1 per 4 km s−1 channel sensitivity. ASKAP{\textquoteright}s instantaneous field of view at 1.4 GHz, delivered by the PAF{\textquoteright}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 z∼ 0.05 (∼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).",

keywords = "ISM – large-scale structure, ISM – surveys – galaxies: evolution, formation, kinematics & dynamics, Radio lines: galaxies",

author = "Koribalski, {B{\"a}rbel S.} and L. Staveley-Smith and T. Westmeier and P. Serra and K. Spekkens and Wong, {O. I.} and K. Lee-Waddell and Lagos, {C. D.P.} and D. Obreschkow and Ryan-Weber, {E. V.} and M. Zwaan and V. Kilborn and G. Bekiaris and K. Bekki and F. Bigiel and A. Boselli and A. Bosma and B. Catinella and G. Chauhan and Cluver, {M. E.} and M. Colless and Courtois, {H. M.} and Crain, {R. A.} and {de Blok}, {W. J.G.} and H. D{\'e}nes and Duffy, {A. R.} and A. Elagali and Fluke, {C. J.} and For, {B. Q.} and G. Heald and Henning, {P. A.} and Hess, {K. M.} and Holwerda, {B. W.} and C. Howlett and T. Jarrett and Jones, {D. H.} and Jones, {M. G.} and J{\'o}zsa, {G. I.G.} and R. Jurek and E. J{\"u}tte and P. Kamphuis and I. Karachentsev and J. Kerp and D. Kleiner and Kraan-Korteweg, {R. C.} and R. L{\'o}pez-S{\'a}nchez and J. Madrid and M. Meyer and J. Mould and C. Murugeshan and Norris, {R. P.} and Oh, {S. H.} and Oosterloo, {T. A.} and A. Popping and M. Putman and Reynolds, {T. N.} and J. Rhee and Robotham, {A. S.G.} and S. Ryder and Schr{\"o}der, {A. C.} and Li Shao and Stevens, {A. R.H.} and Taylor, {E. N.} and {van der Hulst}, {J. M.} and L. Verdes-Montenegro and Wakker, {B. P.} and J. Wang and M. Whiting and B. Winkel and C. Wolf",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Nature B.V.",

year = "2020",

month = jul,

day = "1",

doi = "10.1007/s10509-020-03831-4",

language = "English",

volume = "365",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer Netherlands",

number = "7",

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Koribalski, BS, Staveley-Smith, L, Westmeier, T, Serra, P, Spekkens, K, Wong, OI, Lee-Waddell, K, Lagos, CDP, Obreschkow, D, Ryan-Weber, EV, Zwaan, M, Kilborn, V, Bekiaris, G, Bekki, K, Bigiel, F, Boselli, A, Bosma, A, Catinella, B, Chauhan, G, Cluver, ME, Colless, M, Courtois, HM, Crain, RA, de Blok, WJG, Dénes, H, Duffy, AR, Elagali, A, Fluke, CJ, For, BQ, Heald, G, Henning, PA, Hess, KM, Holwerda, BW, Howlett, C, Jarrett, T, Jones, DH, Jones, MG, Józsa, GIG, Jurek, R, Jütte, E, Kamphuis, P, Karachentsev, I, Kerp, J, Kleiner, D, Kraan-Korteweg, RC, López-Sánchez, R, Madrid, J, Meyer, M, Mould, J, Murugeshan, C, Norris, RP, Oh, SH, Oosterloo, TA, Popping, A, Putman, M, Reynolds, TN, Rhee, J, Robotham, ASG, Ryder, S, Schröder, AC, Shao, L, Stevens, ARH, Taylor, EN, van der Hulst, JM, Verdes-Montenegro, L, Wakker, BP, Wang, J, Whiting, M, Winkel, B & Wolf, C 2020, 'WALLABY – an SKA Pathfinder H i survey', Astrophysics and Space Science, vol. 365, no. 7, 118. https://doi.org/10.1007/s10509-020-03831-4

TY - JOUR

T1 - WALLABY – an SKA Pathfinder H i survey

AU - Koribalski, Bärbel S.

AU - Staveley-Smith, L.

AU - Westmeier, T.

AU - Serra, P.

AU - Spekkens, K.

AU - Wong, O. I.

AU - Lee-Waddell, K.

AU - Lagos, C. D.P.

AU - Obreschkow, D.

AU - Ryan-Weber, E. V.

AU - Zwaan, M.

AU - Kilborn, V.

AU - Bekiaris, G.

AU - Bekki, K.

AU - Bigiel, F.

AU - Boselli, A.

AU - Bosma, A.

AU - Catinella, B.

AU - Chauhan, G.

AU - Cluver, M. E.

AU - Colless, M.

AU - Courtois, H. M.

AU - Crain, R. A.

AU - de Blok, W. J.G.

AU - Dénes, H.

AU - Duffy, A. R.

AU - Elagali, A.

AU - Fluke, C. J.

AU - For, B. Q.

AU - Heald, G.

AU - Henning, P. A.

AU - Hess, K. M.

AU - Holwerda, B. W.

AU - Howlett, C.

AU - Jarrett, T.

AU - Jones, D. H.

AU - Jones, M. G.

AU - Józsa, G. I.G.

AU - Jurek, R.

AU - Jütte, E.

AU - Kamphuis, P.

AU - Karachentsev, I.

AU - Kerp, J.

AU - Kleiner, D.

AU - Kraan-Korteweg, R. C.

AU - López-Sánchez, R.

AU - Madrid, J.

AU - Meyer, M.

AU - Mould, J.

AU - Murugeshan, C.

AU - Norris, R. P.

AU - Oh, S. H.

AU - Oosterloo, T. A.

AU - Popping, A.

AU - Putman, M.

AU - Reynolds, T. N.

AU - Rhee, J.

AU - Robotham, A. S.G.

AU - Ryder, S.

AU - Schröder, A. C.

AU - Shao, Li

AU - Stevens, A. R.H.

AU - Taylor, E. N.

AU - van der Hulst, J. M.

AU - Verdes-Montenegro, L.

AU - Wakker, B. P.

AU - Wang, J.

AU - Whiting, M.

AU - Winkel, B.

AU - Wolf, C.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - The 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 36 × 12 -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 (− 90 ∘< δ< + 30 ∘) to a redshift of z≲ 0.26 , 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 z∼ 0.05 (∼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).

AB - The 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 36 × 12 -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 (− 90 ∘< δ< + 30 ∘) to a redshift of z≲ 0.26 , 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 z∼ 0.05 (∼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).

KW - ISM – large-scale structure

KW - ISM – surveys – galaxies: evolution, formation, kinematics & dynamics

KW - Radio lines: galaxies

UR - http://www.scopus.com/inward/record.url?scp=85087890934&partnerID=8YFLogxK

U2 - 10.1007/s10509-020-03831-4

DO - 10.1007/s10509-020-03831-4

M3 - Article

SN - 0004-640X

VL - 365

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 7

M1 - 118

ER -

WALLABY – an SKA Pathfinder H i survey

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