J/A+A/527/A90ivo://CDS.VizieR/J/A+A/527/A90doi:10.26093/cds/vizier.35270090CDSPopping A.Braun R.2017-10-13T15:40:46Z2011-09-03T14:39:41ZCDS support team

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

cds-question@unistra.frsurveysgalaxy-clustersradio-galaxiesh-i-line-emissionObservations of neutral hydrogen can provide a wealth of information about the kinematics of galaxies. To learn more about the large-scale structures and accretion processes, the extended environment of galaxies have to be observed. Numerical simulations predict a cosmic web of extended structures and gaseous filaments. To observe the direct vicinity of galaxies, column densities have to be achieved that probe the regime of Lyman limit systems. Typically, HI observations are limited to a brightness sensitivity of N_HI_~10^19^cm^-2^, but this has to be improved by ~2 orders of magnitude. With the Westerbork Synthesis Radio Telescope (WSRT), we mapped the galaxy filament connecting the Virgo Cluster with the Local Group. About 1500 square degrees on the sky was surveyed with Nyquist sampled pointings. By using the WSRT antennas as single-dish telescopes instead of the more conventional interferometer, we were very sensitive to extended emission. The survey consists of a total of 22000 pointings, and each pointing was observed for two minutes with 14 antennas.2011A&A...527A..90Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/527/A90CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/357/819 : Colours and HI line observations in Virgo (Sabatini+, 2005)J/AJ/133/2569 : ALALFA survey. Northern Virgo HI sources (Giovanelli+, 2007)J/AJ/136/713 : ALALFA survey. Second Virgo HI sources (Kent+, 2008)J/A+A/528/A28 : WSRT Virgo HI filament survey. II. (Popping+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/527/A90https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/527/A90http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/527/A90https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/527/A90https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/527/A90http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/527/A90GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/527/A90/table1 (Physical properties of confirmed detections in the Westerbork Virgo Filament Survey total-power data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/527/A90/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/527/A90/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/527/A90/table1?GETtext/xml+votable180.050000true136.61256.250.005555555555555556Cone search capability for table J/A+A/527/A90/table2 (Source properties of candidate HI detections in the Westerbork Virgo Filament Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/527/A90/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/527/A90/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/527/A90/table2?GETtext/xml+votable180.050000true134.841673.48250.0055555555555555566/4110 4121 4126-4127 4148 4181 8195 8213 8225 8253 8320 8330 8354-8355 8359-8360 25597 25918 25958 25961 25966-25967 25972 25979-25980 25999 26061 26066 26069 26090 26175 26194 26214 26217 26222 26234 26260 26265 26268 26279 26287 26290 26292 26294-26295 26301 26303-26304 26308-26309 26317-26318 26320 26323 26330-26331 26337 26351 26353-26354 26361-26362 26365 26377 26388 26411-26412 26423-26424 26451 26472 26502 26518 26523 26979 26992-26993 26997 27030 27051 27055 27064 27069-27071 27074 27079 27090 27098 27106 27130 27199 27246 27253 27315 27383 27406 27418 27426-27427 27458 27524 27555 27561 27651 27653 27656 27664 27668 27713 27716 27718 27720-27722 27724 27727 27731 27736-27737 27750-27751 27811 27814 27818 27820 31322 31327 31387 31466 31469 31475 31478 31541 31565 31628 31630 31632https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/527/A90?format=asciiRadiodefaultJ/A+A/527/A90/table1Physical properties of confirmed detections in the Westerbork Virgo Filament Survey total-power datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWVFSWVFS name (HHMM+DDMM)meta.id;meta.maincharf_WVFS[*] Correction note (1)meta.codecharONameOptical IDmeta.id;spect.dopplerVeloc.opt;em.optcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHRVHeliocentric recession velocitykm/sspect.dopplerVeloc;pos.heliocentricintSHIIntegrated HI fluxJy.km/sphot.flux.density;em.line.HI;spect.linefloatW20Width velocity at 20% of the peak fluxkm/sspect.line.widthintn_W20[*] edge detection (2)meta.notecharSimbadNameSimbad column added by the CDSmeta.idcharONamesOther optical IDsmeta.idcharJ/A+A/527/A90/table2Source properties of candidate HI detections in the Westerbork Virgo Filament SurveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWVFSWVFS name (HHMM+DDMM)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricintSHIIntegrated HI fluxJy.km/sphot.flux.density;em.line.HI;spect.linefloatW20Width velocity at 20% of the peak fluxkm/sspect.line.widthintsigmarms noise levelJy.km/sinstr.det.noisefloatS/NSignal-to-noise ratiostat.snrfloatJ/A+A/527/A90/notesIndividual notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWVFSWVFS name (HHMM+DDMM)meta.id;meta.maincharNoteText of the notemeta.note