The Arecibo L-band Feed Array Zone of Avoidance (ALFAZOA) Shallow Survey

Sanchez-Barrantes, Monica; Henning, P. A.; McIntyre, Travis; Momjian, Emmanuel; Minchin, R. F.; Rosenberg, J. L.; Schneider, Stephen E.; Driel, W.D. van; Ramatsoku, M.; Butcher, Z.; Vaez, E.

doi:10.3847/1538-3881/ab4b51

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…H I is an ideal diagnostic tool for studying processes in clusters because of its sensitivity to the environment. It has also proved most effective at detecting galaxies at low Galactic latitudes (Kraan-Korteweg et al 1994;van Driel et al 2009;Henning et al 2010;McIntyre et al 2015;Staveley-Smith et al 2016;Sanchez-Barrantes et al 2019). However, it is unsuitable for tracing the dominant galaxy population of clusters which primarily comprises gas-poor, early-type galaxies.…”

Section: Introductionmentioning

confidence: 99%

A near-infrared study of the obscured 3C129 galaxy cluster

Ramatsoku

Verheijen

Kraan-Korteweg

et al. 2020

A&A

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We present a catalogue of 261 new infrared selected members of the 3C 129 galaxy cluster. The cluster, located at z ≈ 0.02, forms part of the Perseus-Pisces filament and is obscured at optical wavelengths due to its location in the zone of avoidance. We identified these galaxies using the J- and K-band imaging data provided by the UKIDSS Galactic Plane Survey within an area with a radius of 1.1° centred on the X-ray emission of the cluster at ℓ, b ≈ 160.52° ,0.27°. A total of 26 of the identified galaxy members have known redshifts 24 of which are from our 2016 Westerbork H I survey and two are from optical spectroscopy. An analysis of the galaxy density at the core of the 3C 129 cluster shows it to be less dense than the Coma and Norma clusters, but comparable to the galaxy density in the core of the Perseus cluster. From an assessment of the spatial and velocity distributions of the 3C 129 cluster galaxies that have redshifts, we derived a velocity of cz = 5227 ± 171 km s−1 and σ = 1097 ± 252 km s−1 for the main cluster, with a substructure in the cluster outskirts at cz = 6923 ± 71 km s−1 with σ = 422 ± 100 km s−1. The presence of this substructure is consistent with previous claims based on the X-ray analysis that the cluster is not yet virialised and may have undergone a recent merger.

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Section: Introductionmentioning

confidence: 99%

A near-infrared study of the obscured 3C129 galaxy cluster

Ramatsoku

Verheijen

Kraan-Korteweg

et al. 2020

A&A

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“…The Arecibo L-band Feed Array Zone of Avoidance Shallow Survey is currently the complete H I survey for the ZoA area in the northern sky. It conducted a neutral hydrogen blind survey in an area of 1360 square degrees with extremely high sensitivity, detected 403 galaxies with a redshift velocities of 12,000 km s −1 , authenticated locations of large-scale structures such as C7, Cζ, Pegasus, Corona Borealis, and Delphinus structures (Sanchez- Barrantes et al 2019), and further refined our understanding of the local universe.…”

Section: Introductionmentioning

confidence: 89%

H i Galaxy Detections in the Zone of Avoidance with FAST

Feng

Liu

Xi³

et al. 2023

Res. Astron. Astrophys.

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The Zone of Avoidance(ZoA) is a region of low galactic latitude that is heavily obscured by the Milky Way. Observations with radio telescopes are basically unaffected by dust extinction and can unveil the structure behind it through the Milky Way. One of the scientific goals of the Five-hundred-meter Aperture Spherical radio Telescope(FAST) is to search for the neutral hydrogen and understand the large-scale physics to explore the origin and evolution of the universe. We take the 15500 $IRAS$(the Infrared Astronomical Satellite) galaxies from PSC$z$('Point Source Catalog') survey to reconstruct the density field of the local universe, obtain the distribution of the relative density of galaxies in the ZoA region with a redshift $z$ below 0.07, and the number of detectable galaxies with FAST is estimated by using the neutral hydrogen mass function of the ALFA (Arecibo L-band Feed Array) survey. We conclude that FAST can observe more than 2000 ZoA galaxies within a distance of 300 Mpc$h^{-1}_{70}$, and present preliminary results of the partial GPPS(The FAST Galactic Plane Pulsar Snapshot survey) data, compared with ALFA ZoA(The Arecibo L-band Feed Array Zone of Avoidance), show that FAST has a higher detection sensitivity to search for HI galaxies in the ZoA area.

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“…Hoppmann et al (2015) detected 102 galaxies in 60% of the total survey with an rms of 80 µJy (at 10 km s −1 ) in the RFIfree regions. The 'ALFA Zone of Avoidance Survey' (Henning et al 2010;Sanchez-Barrantes et al 2019) covers the low-Galactic-latitude region with the goal to uncover heavily obscured or hidden galaxies out to 12 000 km s −1 and trace large-scale structure behind the Milky Way.…”

Section: Arecibo Hi Surveysmentioning

confidence: 99%

WALLABY -- An SKA Pathfinder HI Survey

Koribalski,

Staveley-Smith,

Westmeier

et al. 2020

Preprint

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The Widefield ASKAP L-band Legacy All-sky Blind surveY (wallaby) is a nextgeneration 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 signalto-noise ratio of five, wallaby is expected to detect over 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 previous 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.wallaby data products will be made publicly available in the CSIRO ASKAP Science Data Archive (CASDA).

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The Arecibo L-band Feed Array Zone of Avoidance (ALFAZOA) Shallow Survey

Cited by 5 publications

References 29 publications

A near-infrared study of the obscured 3C129 galaxy cluster

A near-infrared study of the obscured 3C129 galaxy cluster

H i Galaxy Detections in the Zone of Avoidance with FAST

WALLABY -- An SKA Pathfinder HI Survey

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