J/MNRAS/423/787ivo://CDS.VizieR/J/MNRAS/423/787doi:10.26093/cds/vizier.74230787CDSTaylor R.Davies J.I.Auld R.Minchin R.F.2026-03-18T15:37:34Z2013-05-06T14:17:13ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryradial-velocityWe present 21-cm observations of a 10x2deg^2^ region in the Virgo cluster, obtained as part of the Arecibo Galaxy Environment Survey. 289 sources are detected over the full redshift range (-2000<Vhel<+20000km/s) with 95 belonging to the cluster (Vhel<3000km/s). We combine our observations with data from the optically selected Virgo Cluster Catalogue (VCC) and the Sloan Digital Sky Survey. Most of our detections can be clearly associated with a unique optical counterpart, and 30 per cent of the cluster detections are new objects fainter than the VCC optical completeness limit. Seven detections may have no optical counterpart and we discuss the possible origins of these objects. Seven detections appear associated with early-type galaxies. We perform HI stacking on the HI-undetected galaxies listed in the VCC in this region and show that they must have significantly less gas than those actually detected in HI. Galaxies undetected in HI in the cluster appear to be really devoid of gas, in contrast to a sample of field galaxies from the Arecibo Legacy Fast ALFA (ALFALFA).2012MNRAS.423..787Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/423/787CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/383/1519 : Abell 1367 HI sources from AGES (Cortese+, 2008)J/AJ/140/1093 : NGC7332/7339 & NGC1156 HI sources from AGES (Minchin+, 2010)J/MNRAS/415/1883 : AGES HI sources in NGC 7448 (Davies+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/423/787https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/423/787http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/423/787https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/423/787https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/423/787http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/423/787GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/423/787/table1 (HI properties of objects detected within the Virgo cluster (cz<3000km/s))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/423/787/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/423/787/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/423/787/table1?GETtext/xml+votable180.050000true185.1156.8869440.005555555555555556Cone search capability for table J/MNRAS/423/787/table2 (HI properties of galaxies behind the Virgo cluster (cz>3000km/s))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/423/787/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/423/787/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/423/787/table2?GETtext/xml+votable180.050000true190.7229178.6333330.0055555555555555565/6590-6591 6929-6932 6936 6/26358-26359 27701 27715 27732 27736 27738 27748https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/423/787?format=asciidefaultJ/MNRAS/423/787/table1HI properties of objects detected within the Virgo cluster (cz<3000km/s)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOmeta.ref.urlcharNameSource name (G1)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RA (1)sstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DE (1)arcsecstat.error;pos.eq.decintHVHeliocentric Velocity of HI linekm/sspect.dopplerVeloc;pos.heliocentricinte_HVrms uncertainty on HV (1)km/sstat.errorintSimbadSimbad column added by the CDSmeta.ref.urlcharW50Maximum velocity width at 50% of the peak fluxkm/sspect.line.width;stat.maxinte_W50rms uncertainty on W50 (1)km/sstat.errorintW20Maximum velocity width at 20% of the peak fluxkm/sspect.line.width;stat.maxinte_W20rms uncertainty on W20 (1)km/sstat.errorintFluxTotal HI fluxJyphot.fluxfloate_Fluxrms uncertainty on Flux (1)Jystat.error;phot.fluxfloatDistDistance of galaxyMpcpos.distancefloatlogMHIEstimated HI masslog(solMass)phys.massfloatS/NPeak signal-to-noise ratiostat.snr;stat.maxfloatrmsmedian noise level (mJy/beam)mJyinstr.det.noise;stat.medianfloatJ/MNRAS/423/787/table2HI properties of galaxies behind the Virgo cluster (cz>3000km/s)Ometa.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNameSource name (G1)meta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on RA (1)sstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on DE (1)arcsecstat.error;pos.eq.decintHVHeliocentric Velocity of HI linekm/sspect.dopplerVeloc;pos.heliocentricinte_HVrms uncertainty on HV (1)km/sstat.errorintW50Maximum velocity width at 50% of the peak fluxkm/sspect.line.width;stat.maxinte_W50rms uncertainty on W50 (1)km/sstat.errorintW20Maximum velocity width at 20% of the peak fluxkm/sspect.line.width;stat.maxinte_W20rms uncertainty on W20 (1)km/sstat.errorintFluxTotal HI fluxJyphot.fluxfloate_Fluxrms uncertainty on Flux (1)Jystat.error;phot.fluxfloatDistDistance of galaxyMpcpos.distancefloatlogMHIEstimated HI masslog(solMass)phys.massfloatS/NPeak signal-to-noise ratiostat.snr;stat.maxfloatrmsmedian noise level (mJy/beam)mJyinstr.det.noise;stat.medianfloatJ/MNRAS/423/787/table3Optical properties of HI detections in the Virgo clusterMT[-1/20] Morphological type, using the system of the GOLDMine data basemeta.code;src.morphintgMAGAbsolute magnitude in the g bandmagphys.magAbsfloatiMAGAbsolute magnitude in the i bandmagphys.magAbsfloatg-ig-i colour indexmagphot.color;em.opt.B;em.opt.IfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (G1)meta.id;meta.maincharFlag[0/2] Flag for status of the optical counterpart used (1)meta.code.errorintONameOptical source name, when knownmeta.idcharMHI/LgHI mass-to-light ratio, g bandSunphys.composition.massLightRatiofloatDiamOptical diameterkpcpos.distancefloatDHI? Estimated HI deficiency (2)stat.fit.paramfloatnullableSepDdifference between optical and HI centresarcminspect.dopplerVeloc.optfloatD.M49? Sky distance from M49, only in table3degpos.angDistancefloatnullableJ/MNRAS/423/787/table4*Optical properties of HI detections behind the Virgo clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (G1)meta.id;meta.maincharFlag[0/2] Flag for status of the optical counterpart used (1)meta.code.errorintONameOptical source name, when knownmeta.idcharMT[-1/20] Morphological type, using the system of the GOLDMine data basemeta.code;src.morphintgMAGAbsolute magnitude in the g bandmagphys.magAbsfloatiMAGAbsolute magnitude in the i bandmagphys.magAbsfloatg-ig-i colour indexmagphot.color;em.opt.B;em.opt.IfloatMHI/LgHI mass-to-light ratio, g bandSunphys.composition.massLightRatiofloatDiamOptical diameterkpcpos.distancefloatDHI? Estimated HI deficiency (2)stat.fit.paramfloatnullableSepDdifference between optical and HI centresarcminspect.dopplerVeloc.optfloat