J/ApJS/274/18ivo://CDS.VizieR/J/ApJS/274/18doi:10.26093/cds/vizier/bb-8j-jCDSXi H.Peng BoStaveley-Smith L.For B.-Q.Liu B.Ding D.2026-08-03T07:25:25Z2025-05-16T14:07:40ZCDS support team

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

cds-question@unistra.frradio-galaxiesradio-astronomyh-i-line-emissionradial-velocityWe have used the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to conduct a blind ultradeep survey for neutral hydrogen (HI). We present the complete results from the first of six fields (FUDS0). These observations of 95hr allowed us to achieve a high-sensitivity (~50{mu}Jy/beam) and a high-frequency resolution (22.9kHz) over an area of 0.72deg^2^. We detected 128 galaxies in HI distributed over the redshift range of 0<z<0.4, with HI masses in the range of 6.67<=log(M_HI_/h_70_^-2^M_{sun}_)<=10.92, and three faint high-velocity clouds, with a peak column density of N_HI_<=3.1x10^17^cm^-2^. Of the galaxies, 95 are new detections and six have z>0.38, where no unlensed HI emission has previously been directly detected. Estimates of completeness and reliability are presented for the catalog. The consistency of continuum and HI flux estimates with the NRAO VLA Sky Survey and the Arecibo Ultra-Deep Survey, respectively, confirms the accuracy of the calibration method and data reduction pipeline developed for the full FAST Ultra-Deep Survey.2024ApJS..274...18Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/274/18CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/73 : HI Parkes All Sky Survey Catalogue (HIPASS) (Meyer+, 2004)VIII/89 : Northern HI Parkes All Sky Survey Catalogue (HIPASS) (Wong+, 2006)J/ApJS/119/159 : Deep survey of HI-selected galaxies (Spitzak+, 1998)J/MNRAS/342/738 : HI Jodrell All Sky Survey (Lang+, 2003)J/AJ/142/170 : ALFALFA survey: {alpha}.40 HI source catalog (Haynes+, 2011)J/AJ/151/52 : The HIZOA-S survey (Staveley-Smith+, 2016)J/MNRAS/501/4550 : The complete Arecibo Ultra-Deep Survey (Xi+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/274/18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/274/18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/274/18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/274/18https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/274/18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/274/18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/274/18/table1 (Properties of galaxies in the FUDS0 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/274/18/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/274/18/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/274/18/table1?GETtext/xml+votable180.050000true124.732522.3627780.0055555555555555566/4803 4806-4807 4812https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/274/18?format=asciiRadiodefaultJ/ApJS/274/18/table1Properties of galaxies in the FUDS0 fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFUDS0[1/128] FAST Ultra-Deep Survey Release 0 Sequential identifiermeta.id;meta.mainintRAJ2000[8] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[21/22] Degree of Declination (J2000)pos.eq.dec;meta.maincz[2052/120534] Barycentric recessional velocitykm.s**-1spect.dopplerVeloc;pos.barycenterdoublee_cz[0.1/30.4] Uncertainty in czkm.s**-1stat.error;spect.dopplerVeloc;pos.barycenterfloatSint[0.03/7.1] Integrated flux density weighted frequencymJy.MHzphot.flux.density;em.radio.750-1500MHzfloate_Sint[0.01/0.7] Uncertainty in SintmJy.MHzstat.error;phot.flux.density;em.radio.750-1500MHzfloatSpeak[0.08/14.9] Peak Flux densitymJyphot.flux.density;stat.max;em.radio.750-1500MHzfloate_Speak[0.01/1.5] Uncertainty in SpeakmJystat.error;phot.flux.density;stat.maxfloatW20[0.1/3.1] W20 linewidthMHzspect.line.widthfloate_W20[0.01/0.24] Uncertainty in W20MHzstat.error;spect.line.widthfloatW50[0.07/3] W50 linewidthMHzspect.line.widthfloate_W50[0.01/0.21] Uncertainty in W50MHzstat.error;spect.line.widthfloatlogMHI[6.6/11] Log, HI Mass, log (M_{sun}_/h_70_^2^)phys.mass;em.line.HIfloate_logMHI[0.04/0.11] Uncertainty in logMHIstat.error;phys.mass;em.line.HIfloatAUDS[97/239]? Arecibo Ultra-Deep Survey (AUDS) Identifier, in Xi+ 2021, J/MNRAS/501/4550meta.id.crossintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar