J/ApJS/275/28ivo://CDS.VizieR/J/ApJS/275/28doi:10.26093/cds/vizier/bb-8k-wCDSSaha K.Maulick S.Pandey P.Bhattacharya S.Borgohain A.Mondal C.,Rafelski M.Kataria M.Teplitz H.I.Tandon S.N.Windhorst R.A.,Elmegreen B.G.Herenz E.C.Rutkowski M.2026-08-03T07:25:45Z2025-11-19T09:49:22ZCDS support team

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

cds-question@unistra.frultraviolet-photometrysurveysastronomical-object-identificationgalaxiescatalogsWe present the AstroSat UV Deep Field south (AUDFs), an imaging survey using the wide-field Ultraviolet Imaging Telescope on board AstroSat. AUDFs cover ~236arcmin^2^ of the sky area, including the Great Observatories Origins Deep Survey (GOODS) South field in F154W and N242W filters. The deep and shallow parts of AUDFs have an exposure time ~62000 and ~31000s, respectively, in the F154W filter, while in the N242W filter, they are ~64000 and ~34000s. These observations reached a 3{sigma} depth of 27.2 and 27.7 AB mag with a 50% completeness limit of 27 and 27.6 AB mag in the F154W and N242W filters, respectively. With the acquired depth, AUDFs is the deepest far- and near-UV imaging data covering the largest area known to date at 1.2"-1.6" spatial resolution. Two primary catalogs were constructed for the F154W and N242W filters, each containing 13495 and 19374 sources brighter than the 3{sigma} detection limit, respectively. Our galaxy counts of a power-law slope of ~0.43dex/mag in the N242W filter match well with Hubble Space Telescope/Wide-Field Camera 3/UVIS observations. A wide range of extragalactic science can be achieved with this unique data, such as providing a sample of galaxies emitting ionizing photons in the redshift range of z ~1-3 and beyond, constraining the UV luminosity function, investigating the extended UV emission around star-forming galaxies and UV morphologies for z<1. The UV catalog will enhance the legacy value of the existing optical/IR imaging and spectroscopic observations from ground- and space-based telescopes on the GOODS South field.2024ApJS..275...28Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/275/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/261 : GOODS initial results (Giavalisco+, 2004)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/ApJ/631/85 : Galaxy morphologies in the Hubble UDF (Elmegreen+, 2005)J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)J/ApJ/639/724 : Tadpole galaxies in the Hubble UDF (Straughn+, 2006)J/ApJS/173/538 : XUV-Disk galaxies in the Local Universe (Thilker+, 2007)J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)J/A+A/511/A50 : JHks of GOODS-South field (Retzlaff+, 2010)J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)J/A+A/570/A11 : The Hawk-I UDS and GOODS Survey (HUGS) (Fontana+, 2014)J/ApJS/218/33 : Spitzer-CANDELS catalog within 5 deep fields (Ashby+, 2015)J/ApJ/803/34 : z~4-10 galaxies from HST legacy fields (Bouwens+, 2015)J/AJ/150/31 : Phot. and redshifts of galaxies in the UDF (Rafelski+, 2015)J/ApJ/801/97 : GOODS-S & UDS stellar mass cat. from CANDELS (Santini+, 2015)J/ApJS/225/27 : 3D-HST Survey: grism spectra master catalog (Momcheva+, 2016)J/A+A/606/A12 : MUSE-Wide survey: 831 emission line galaxies (Herenz+, 2017)J/ApJS/228/2 : Chandra Deep Field-South survey: 7Ms sources (Luo+, 2017)J/ApJS/237/12 : The Hubble Deep UV Legacy Survey (HDUV) (Oesch+, 2018)J/ApJS/235/14 : HFF-DeepSpace phot. cat. of 12 HFF fields (Shipley+, 2018)J/A+A/624/A141 : MUSE-Wide Survey DR1 catalog (Urrutia+, 2019)J/ApJS/244/16 : HLF photometric catalog in GOODS-S v2.1 (Whitaker+, 2019)J/ApJ/891/144 : CFHT dwarf satellite gal. around LV hosts (Carlsten+, 2020)J/A+A/670/A4 : MUSE Hubble Ultra Deep Field surveys. DR2 (Bacon+, 2023)J/ApJ/946/65 : AstroSat/UVIT obs. of SMC: point-source cat. (Devaraj+, 2023)J/ApJS/264/40 : AstroSat UV GOODS-N Deep Field cat. (AUDFn) (Mondal+, 2023)J/ApJS/265/40 : MUDF III. HST grism spectroscopy & imaging (Revalski+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/275/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/275/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/275/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/275/28https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/275/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/275/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/275/28/table6 (AstroSat UV Deep Field south (AUDFs) N242W cross-matched catalog having an individual or multiple counterparts in W19 (Whitaker+ 2019, J/ApJS/244/16) HLF catalog (Version 1; AUDFs-N242W-Cat1-v1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/275/28/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/275/28/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/275/28/table6?GETtext/xml+votable180.050000true53.15225-27.94790.005555555555555556Cone search capability for table J/ApJS/275/28/catf154w (AstroSat UV Deep Field south (AUDFs) F154W catalog consisting of detected UVIT objects with SNR>3 (Version 1) (see Table 5; AUDFs-F154W-Cat0-v1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/275/28/catf154w?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/275/28/catf154w?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/275/28/catf154w?GETtext/xml+votable180.050000true53.05525-27.95570.005555555555555556Cone search capability for table J/ApJS/275/28/catn242w (AstroSat UV Deep Field south (AUDFs) N242W catalog consisting of detected UVIT objects with SNR>3 (Version 1) (see Table 5; AUDFs_N242W_Cat0-v1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/275/28/catn242w?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/275/28/catn242w?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/275/28/catn242w?GETtext/xml+votable180.050000true53.15225-27.94790.0055555555555555566/35935 35957https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/275/28?format=asciiUVdefaultJ/ApJS/275/28/table6AstroSat UV Deep Field south (AUDFs) N242W cross-matched catalog having an individual or multiple counterparts in W19 (Whitaker+ 2019, J/ApJS/244/16) HLF catalog (Version 1; AUDFs-N242W-Cat1-v1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDN242W[1/30685] Identification number in the catN242W catalog (AUDFs_N242W_Cat0-v1)meta.idintNameNUVUnique string associated with the N242W object AUDFs_NNNNNNmeta.id;meta.maincharRAJ2000[52.9/53.3] Right Ascension, N242W object centroid (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-28/-27.6] Declination, N242W object centroid (J2000)degpos.eq.dec;meta.mainindexedN242Wmag2[17.6/28.8] N242W AB magnitude in 1.2" aperture (1)magphot.mag;em.UV.200-300nmfloate_N242Wmag2[0/1] Error in N242Wmag1magstat.error;phot.mag;em.UV.200-300nmfloatN242Wmag[17/29] N242W AB magnitude in Kron (N242W_AUTO) aperturemagphot.mag;em.UV.200-300nmfloate_N242Wmag[0/2] Error in N242Wmagmagstat.error;phot.mag;em.UV.200-300nmfloatIDF154W[17/25425] Identification number in the nearest neighbor in catF154W (AUDFs-F154W-Cat0-v1)meta.idintF154Wmag3[19.8/28.6] F154W AB magnitude in 1.6" aperture (1)magphot.mag;em.UV.100-200nmfloate_F154Wmag3[0.001/1.3] Error in F154Wmag1magstat.error;phot.mag;em.UV.100-200nmfloatF154Wmag[19.2/28.2] F154W AB magnitude in Kron (F154W_AUTO) aperturemagphot.mag;em.UV.100-200nmfloate_F154Wmag[0.002/1.3] Error in F154Wmagmagstat.error;phot.mag;em.UV.100-200nmfloatCANDELS[13475/172826] Identifier of the nearest neighbour from the W19 catalog (2)meta.id.crossintRAGdegRight Ascension, W19 Gaia-corrected position (J2000)degpos.eq.raDEGdegDeclination, W19 Gaia-corrected position (J2000)degpos.eq.decMult[1/2] Flag denoting whether there are single or multiple objects (3)meta.code.errorintFUV[0/2]? Flag denoting the presence of an object in the F154W band (4)meta.codeintnullableJ/ApJS/275/28/catf154wAstroSat UV Deep Field south (AUDFs) F154W catalog consisting of detected UVIT objects with SNR>3 (Version 1) (see Table 5; AUDFs-F154W-Cat0-v1)e_Aimg[0.028/3] Uncertainty in Aimgpixstat.error;phys.size.smajAxisfloatBimg[0.36/8.2] Semi-minor axis (2)pixphys.size.sminAxisfloate_Bimg[0.02/0.7] Uncertainty in Bimgpixstat.error;phys.size.sminAxisfloatSNR[3/69.4] Signal-to-noise of object (3)stat.snrfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDF154W[7/25425] Identification number in the catalogmeta.idintNameFUVUnique string associated with the F154W object (AUDFs_FNNNNN)meta.id;meta.maincharXpixX pixel coordinate, object centroidpixpos.cartesian.xdoubleYpixY pixel coordinate, object centroidpixpos.cartesian.ydoubleRAJ2000Right Ascension, F154W object centroid (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination, F154W object centroid (J2000)degpos.eq.dec;meta.mainindexedF154Wmag1[20.99/29.6] F154W AB magnitude in 0.7" aperture (1)magphot.mag;em.UV.100-200nmfloate_F154Wmag1[0.001/1.6] Error in F154Wmag1magstat.error;phot.mag;em.UV.100-200nmfloatF154Wmag2[20/28.3] F154W AB magnitude in 1.2" aperture (1)magphot.mag;em.UV.100-200nmfloate_F154Wmag2[0.001/0.8] Error in F154Wmag1magstat.error;phot.mag;em.UV.100-200nmfloatF154Wmag3[19.8/28.8] F154W AB magnitude in 1.6" aperture (1)magphot.mag;em.UV.100-200nmfloate_F154Wmag3[0.001/1.4] Error in F154Wmag1magstat.error;phot.mag;em.UV.100-200nmfloatF154Wmag[19.27/29] F154W AB magnitude in Kron (F154W_AUTO) aperturemagphot.mag;em.UV.100-200nmfloate_F154Wmag[0.002/3] Error in F154Wmagmagstat.error;phot.mag;em.UV.100-200nmfloatFRad[0.3/76.1] Radius that encloses 50% of object's total F154W fluxpixphys.size.radius;em.UV.100-200nmfloatKRadfac[3.5/10.5] Reduced Kron Pseudoradius factor (2)arith.factor;phys.size.radius;em.UV.100-200nmfloatAimg[0.8/18.7] Semi-major axis (2)pixphys.size.smajAxisfloatPA[-90/90] Source position angle, east of northdegpos.posAngfloatNUV[0/1]? Flag denoting the presence of an object in the N242W band (4)meta.codeintnullableJ/ApJS/275/28/catn242wAstroSat UV Deep Field south (AUDFs) N242W catalog consisting of detected UVIT objects with SNR>3 (Version 1) (see Table 5; AUDFs_N242W_Cat0-v1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDN242W[1/30685] Identification number in the catalogmeta.idintNameNUVUnique string associated with the N242W object (AUDFs_NNNNNN)meta.id;meta.maincharXpixX pixel coordinate, object centroidpixpos.cartesian.xdoubleYpixY pixel coordinate, object centroidpixpos.cartesian.ydoubleRAJ2000[52.9/53.3] Right Ascension, N242W object centroid (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-28/-27.6] Declination, N242W object centroid (J2000)degpos.eq.dec;meta.mainindexedN242Wmag1[18.2/30.1] N242W AB magnitude in 0.7" aperture (1)magphot.mag;em.UV.200-300nmfloate_N242Wmag1[0/1.6] Error in N242Wmag1magstat.error;phot.mag;em.UV.200-300nmfloatN242Wmag2[17.6/29.3] N242W AB magnitude in 1.2" aperture (1)magphot.mag;em.UV.200-300nmfloate_N242Wmag2[0/1.4] Error in N242Wmag1magstat.error;phot.mag;em.UV.200-300nmfloatN242Wmag3[17.5/29.5] N242W AB magnitude in 1.6" aperture (1)magphot.mag;em.UV.200-300nmfloate_N242Wmag3[0/2.4] Error in N242Wmag1magstat.error;phot.mag;em.UV.200-300nmfloatN242Wmag[17/29] N242W AB magnitude in Kron (N242W_AUTO) aperturemagphot.mag;em.UV.200-300nmfloate_N242Wmag[0/3.3] Error in N242Wmagmagstat.error;phot.mag;em.UV.200-300nmfloatFRad[0.6/37] Radius that encloses 50% of object's total N242W fluxpixphys.size.radius;em.UV.200-300nmfloatKRadfac[3.5/11.4] Reduced Kron Pseudoradius factor (2)arith.factor;phys.size.radius;em.UV.100-200nmfloatAimg[0.5/15] Semi-major axis (2)pixphys.size.smajAxisfloate_Aimg[0.003/2.1] Uncertainty in Aimgpixstat.error;phys.size.smajAxisfloatBimg[0.2/9] Semi-minor axis (2)pixphys.size.sminAxisfloate_Bimg[0.002/0.6] Uncertainty in Bimgpixstat.error;phys.size.sminAxisfloatPA[-90/90] Source position angle, east of northdegpos.posAngfloatSNR[3/429] Signal-to-noise of object (3)stat.snrfloatFUV[0/1]? Flag denoting the presence of an object in the F154W band (4)meta.codeintnullable