WALLABY - an SKA Pathfinder HI 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; Á. 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. vanÂ 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 HI 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, Á. 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. vanÂ der Hulst, L. Verdes-Montenegro, B. P. Wakker, J. Wang, M. Whiting, B. Winkel, C. Wolf

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Abstract

The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a next-generation survey of neutral hydrogen (HI) 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 HI 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 HI 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
DOIs	https://doi.org/10.1007/s10509-020-03831-4
Publication status	Published - 13-Jul-2020

Keywords

Radio lines: galaxies
ISM
surveys
galaxies: evolution
formation
kinematics & dynamics
large-scale structure
Astrophysics - Astrophysics of Galaxies
Astrophysics - Cosmology and Nongalactic Astrophysics
Astrophysics - Instrumentation and Methods for Astrophysics

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WALLABY – an SKA Pathfinder HIsurveyFinal publisher's version, 10.6 MBLicence: Taverne

https://ui.adsabs.harvard.edu/abs/2020Ap&SS.365..118K

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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 HI survey. Astrophysics and Space Science, 365, Article 118. https://doi.org/10.1007/s10509-020-03831-4

@article{90ccc147b603495a94a5d1cb38e8fe0a,

title = "WALLABY - an SKA Pathfinder HI survey",

abstract = "The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a next-generation survey of neutral hydrogen (HI) 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 HI 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 HI 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 = "Radio lines: galaxies, ISM, surveys, galaxies: evolution, formation, kinematics & dynamics, large-scale structure, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics",

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 L{\'o}pez-S{\'a}nchez, {{\'A}. R.} 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{\^A} der Hulst}, {J. M.} and L. Verdes-Montenegro and Wakker, {B. P.} and J. Wang and M. Whiting and B. Winkel and C. Wolf",

year = "2020",

month = jul,

day = "13",

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

language = "English",

volume = "365",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

}

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, B-Q, 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, ÁR, Madrid, J, Meyer, M, Mould, J, Murugeshan, C, Norris, RP, Oh, S-H, Oosterloo, TA, Popping, A, Putman, M, Reynolds, TN, Rhee, J, Robotham, ASG, Ryder, S, Schröder, AC, Shao, L, Stevens, ARH, Taylor, EN, vanÂ der Hulst, JM, Verdes-Montenegro, L, Wakker, BP, Wang, J, Whiting, M, Winkel, B & Wolf, C 2020, 'WALLABY - an SKA Pathfinder HI survey', Astrophysics and Space Science, vol. 365, 118. https://doi.org/10.1007/s10509-020-03831-4

TY - JOUR

T1 - WALLABY - an SKA Pathfinder HI 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, Á. 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 - vanÂ 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 - 2020/7/13

Y1 - 2020/7/13

N2 - The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a next-generation survey of neutral hydrogen (HI) 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 HI 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 HI 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 (HI) 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 HI 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 HI 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 - Radio lines: galaxies

KW - ISM

KW - surveys

KW - galaxies: evolution

KW - formation

KW - kinematics & dynamics

KW - large-scale structure

KW - Astrophysics - Astrophysics of Galaxies

KW - Astrophysics - Cosmology and Nongalactic Astrophysics

KW - Astrophysics - Instrumentation and Methods for Astrophysics

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

M1 - 118

ER -

WALLABY - an SKA Pathfinder HI survey

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