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Measuring cosmic density of neutral hydrogen via stacking the DINGO-VLA data
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dc.contributor.author | Chen, Qingxiang | |
dc.contributor.author | Meyer, Martin | |
dc.contributor.author | Popping, Attila | |
dc.contributor.author | Staveley-Smith, Lister | |
dc.contributor.author | Bryant, Julia | |
dc.contributor.author | Delhaize, Jacinta | |
dc.contributor.author | Holwerda, B W | |
dc.contributor.author | Cluver, M E | |
dc.contributor.author | Loveday, J | |
dc.contributor.author | Lopez-Sanchez, Angel R | |
dc.contributor.author | Zwaan, Martin | |
dc.contributor.author | Taylor, E N | |
dc.contributor.author | Hopkins, A M | |
dc.contributor.author | Wright, Angus | |
dc.contributor.author | Driver, Simon | |
dc.contributor.author | Brough, S | |
dc.date.accessioned | 2021-11-03T15:30:02Z | |
dc.date.available | 2021-11-03T15:30:02Z | |
dc.date.issued | 2021-12 | |
dc.identifier | 276552125 | |
dc.identifier | 06f8b02c-05a0-4d7c-9f7f-48215b1bbbd8 | |
dc.identifier | 85119076161 | |
dc.identifier | 000713807500088 | |
dc.identifier.citation | Chen , 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 . https://doi.org/10.1093/mnras/stab2810 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | Jisc: caa6ab29447d43269ae5b54a3a989e92 | |
dc.identifier.uri | https://hdl.handle.net/10023/24254 | |
dc.description | Parts 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.abstract | We 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.format.extent | 13 | |
dc.format.extent | 3567037 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | Galaxies: star formation | en |
dc.subject | Radio lines: galaxies | en |
dc.subject | ISM: atoms | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | 3rd-DAS | en |
dc.subject | NIS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Measuring cosmic density of neutral hydrogen via stacking the DINGO-VLA data | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. Arctic Research Centre | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1093/mnras/stab2810 | |
dc.description.status | Peer reviewed | en |
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