J/MNRAS/473/1879ivo://CDS.VizieR/J/MNRAS/473/1879doi:10.26093/cds/vizier.74731879CDSRhee J.Lah P.Briggs F.H.Chengalur J.N.Colless M.Willner S.P.,Ashby M.L.N.Le Fevre O.2024-08-17T20:21:23Z2021-02-10T14:38:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frradio-galaxiesredshiftedWe use observations made with the Giant Metrewave Radio Telescope (GMRT) to probe the neutral hydrogen (HI) gas content of field galaxies in the VIMOS VLT Deep Survey (VVDS) 14h field at z~=0.32. Because the HI emission from individual galaxies is too faint to detect at this redshift, we use an HI spectral stacking technique using the known optical positions and redshifts of the 165 galaxies in our sample to co-add their HI spectra and thus obtain the average HI mass of the galaxies. Stacked HI measurements of 165 galaxies show that >~95 per cent of the neutral gas is found in blue, star-forming galaxies. Among these galaxies, those having lower stellar mass are more gas rich than more massive ones. We apply a volume correction to our HI measurement to evaluate the HI gas density at z~=0.32 as {OMETA}_HI_=(0.50+/-0.18)x10^-3^ in units of the cosmic critical density. This value is in good agreement with previous results at z<0.4, suggesting no evolution in the neutral hydrogen gas density over the last ~4Gyr. However the z~=0.32 gas density is lower than that at z~5 by at least a factor of two.2018MNRAS.473.1879Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/473/1879CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/473/1879https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/473/1879http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/473/1879https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/473/1879https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/473/1879http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/473/1879GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/473/1879/table1 (Catalogue containing redshift data for all sources taken by AAOmega and Hectospec)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/473/1879/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/473/1879/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/473/1879/table1?GETtext/xml+votable180.050000true209.77945835.16602780.0055555555555555565/6522 6/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/473/1879?format=asciiRadiodefaultJ/MNRAS/473/1879/table1Catalogue containing redshift data for all sources taken by AAOmega and HectospecSimbadNameSimbad column added by the CDSmeta.idcharnullablezRedshiftsrc.redshiftdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_objID[*] * denotes an object taken from both instrumentsmeta.notecharobjIDSDSS objIDmeta.idRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_zrms uncertainty on zstat.error;src.redshiftdoublef_z[3/5]? Reshift flag (1)meta.codeintnullableInstInstrument (AAOmega or Hectospec)meta.id;instrcharSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlchar