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dc.contributor.authorChen, Qingxiang
dc.contributor.authorMeyer, Martin
dc.contributor.authorPopping, Attila
dc.contributor.authorStaveley-Smith, Lister
dc.contributor.authorBryant, Julia
dc.contributor.authorDelhaize, Jacinta
dc.contributor.authorHolwerda, B W
dc.contributor.authorCluver, M E
dc.contributor.authorLoveday, J
dc.contributor.authorLopez-Sanchez, Angel R
dc.contributor.authorZwaan, Martin
dc.contributor.authorTaylor, E N
dc.contributor.authorHopkins, A M
dc.contributor.authorWright, Angus
dc.contributor.authorDriver, Simon
dc.contributor.authorBrough, S
dc.identifier.citationChen , Q , Meyer , M , Popping , A , Staveley-Smith , L , Bryant , J , Delhaize , J , Holwerda , B W , Cluver , M E , Loveday , J , Lopez-Sanchez , A R , Zwaan , M , Taylor , E N , Hopkins , A M , Wright , A , Driver , S & Brough , S 2021 , ' Measuring cosmic density of neutral hydrogen via stacking the DINGO-VLA data ' , Monthly Notices of the Royal Astronomical Society , vol. 508 , no. 2 , pp. 2758-2770 .
dc.identifier.otherPURE: 276552125
dc.identifier.otherPURE UUID: 06f8b02c-05a0-4d7c-9f7f-48215b1bbbd8
dc.identifier.otherJisc: caa6ab29447d43269ae5b54a3a989e92
dc.identifier.otherScopus: 85119076161
dc.identifier.otherWOS: 000713807500088
dc.descriptionParts of this research were supported by the Australian Research Council Centres of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D) and All-Sky Astrophysics (CAASTRO), through project numbers CE170100013 and CE110001020, respectively.en
dc.description.abstractWe use the 21-cm emission-line data from the Deep Investigation of Neutral Gas Origin-Very Large Array (DINGO-VLA) project to study the atomic hydrogen gas H I of the Universe at redshifts z< 0.1. Results are obtained using a stacking analysis, combining the H I signals from 3622 galaxies extracted from 267 VLA pointings in the G09 field of the Galaxy and Mass Assembly Survey (GAMA). Rather than using a traditional one-dimensional spectral stacking method, a three-dimensional cubelet stacking method is used to enable deconvolution and the accurate recovery of average galaxy fluxes from this high-resolution interferometric data set. By probing down to galactic scales, this experiment also overcomes confusion corrections that have been necessary to include in previous single-dish studies. After stacking and deconvolution, we obtain a 30σ H I mass measurement from the stacked spectrum, indicating an average H I mass of MHI=(1.67±0.18)×109 M⊙MHI=(1.67±0.18)×109 M⊙⁠. The corresponding cosmic density of neutral atomic hydrogen is ΩHI=(0.38±0.04)×10−3 at redshift of z = 0.051. These values are in good agreement with earlier results, implying there is no significant evolution of ΩHI at lower redshifts.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsCopyright © 2021 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectGalaxies: star formationen
dc.subjectRadio lines: galaxiesen
dc.subjectISM: atomsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleMeasuring cosmic density of neutral hydrogen via stacking the DINGO-VLA dataen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Arctic Research Centreen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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