Gaia CollaborationBailer-Jones, C. A. L.C. A. L.Bailer-JonesTeyssier, D.D.TeyssierDelchambre, L.L.DelchambreDucourant, C.C.DucourantGarabato, D.D.GarabatoHatzidimitriou, D.D.HatzidimitriouKlioner, S. A.S. A.KlionerRimoldini, L.L.RimoldiniBellas-Velidis, I.I.Bellas-VelidisCarballo, R.R.CarballoCARNERERO MARTIN, Maria IsabelMaria IsabelCARNERERO MARTINDiener, C.C.DienerFouesneau, M.M.FouesneauGalluccio, L.L.GalluccioGavras, P.P.GavrasKrone-Martins, A.A.Krone-MartinsRAITERI, Claudia MariaClaudia MariaRAITERITeixeira, R.R.TeixeiraBrown, A. G. A.A. G. A.BrownVALLENARI, AntonellaAntonellaVALLENARIPrusti, T.T.Prustide Bruijne, J. H. J.J. H. J.de BruijneArenou, F.F.ArenouBabusiaux, C.C.BabusiauxBiermann, M.M.BiermannCreevey, O. L.O. L.CreeveyEvans, D. W.D. W.EvansEyer, L.L.EyerGuerra, R.R.GuerraHutton, A.A.HuttonJordi, C.C.JordiLammers, U. L.U. L.LammersLindegren, L.L.LindegrenLuri, X.X.LuriMignard, F.F.MignardPanem, C.C.PanemPourbaix, D.D.PourbaixRANDICH, Maria SofiaMaria SofiaRANDICHSartoretti, P.P.SartorettiSoubiran, C.C.SoubiranTanga, P.P.TangaWalton, N. A.N. A.WaltonBastian, U.U.BastianDRIMMEL, RonaldRonaldDRIMMELJansen, F.F.JansenKatz, D.D.KatzLATTANZI, Mario GilbertoMario GilbertoLATTANZIvan Leeuwen, F.F.van LeeuwenBakker, J.J.BakkerCacciari, C.C.CacciariCastañeda, J.J.CastañedaDe Angeli, F.F.De AngeliFabricius, C.C.FabriciusFrémat, Y.Y.FrématGuerrier, A.A.GuerrierHeiter, U.U.HeiterMasana, E.E.MasanaMessineo, R.R.MessineoMowlavi, N.N.MowlaviNicolas, C.C.NicolasNienartowicz, K.K.NienartowiczPailler, F.F.PaillerPanuzzo, P.P.PanuzzoRiclet, F.F.RicletRoux, W.W.RouxSeabroke, G. M.G. M.SeabrokeSORDO, RosannaRosannaSORDOThévenin, F.F.ThéveninGracia-Abril, G.G.Gracia-AbrilPortell, J.J.PortellAltmann, M.M.AltmannAndrae, R.R.AndraeAudard, M.M.AudardBenson, K.K.BensonBerthier, J.J.BerthierBlomme, R.R.BlommeBurgess, P. W.P. W.BurgessBUSONERO, DeborahDeborahBUSONEROBusso, G.G.BussoCánovas, H.H.CánovasCarry, B.B.CarryCELLINO, AlbertoAlbertoCELLINOCheek, N.N.CheekCLEMENTINI, GisellaGisellaCLEMENTINIDamerdji, Y.Y.DamerdjiDavidson, M.M.Davidsonde Teodoro, P.P.de TeodoroNuñez Campos, M.M.Nuñez CamposDELL'ORO, AldoAldoDELL'OROEsquej, P.P.EsquejFernández-Hernández, J.J.Fernández-HernándezFraile, E.E.FraileGarcía-Lario, P.P.García-LarioGosset, E.E.GossetHaigron, R.R.HaigronHalbwachs, J. -L.J. -L.HalbwachsHambly, N. C.N. C.HamblyHarrison, D. L.D. L.HarrisonHernández, J.J.HernándezHestroffer, D.D.HestrofferHodgkin, S. T.S. T.HodgkinHoll, B.B.HollJanßen, K.K.JanßenJevardat de Fombelle, G.G.Jevardat de FombelleJordan, S.S.JordanLANZAFAME, AlessandroAlessandroLANZAFAMELöffler, W.W.LöfflerMarchal, O.O.MarchalMARRESE, Paola MariaPaola MariaMARRESEMoitinho, A.A.MoitinhoMuinonen, K.K.MuinonenOsborne, P.P.OsbornePANCINO, ElenaElenaPANCINOPauwels, T.T.PauwelsRecio-Blanco, A.A.Recio-BlancoReylé, C.C.ReyléRiello, M.M.RielloRoegiers, T.T.RoegiersRybizki, J.J.RybizkiSarro, L. M.L. M.SarroSiopis, C.C.SiopisSmith, M.M.SmithSOZZETTI, AlessandroAlessandroSOZZETTIUtrilla, E.E.Utrillavan Leeuwen, M.M.van LeeuwenABBAS, UmmiUmmiABBASÁbrahám, P.P.ÁbrahámAbreu Aramburu, A.A.Abreu AramburuAerts, C.C.AertsAguado, J. J.J. J.AguadoAjaj, M.M.AjajAldea-Montero, F.F.Aldea-MonteroALTAVILLA, GiuseppeGiuseppeALTAVILLAÁlvarez, M. A.M. A.ÁlvarezAlves, J.J.AlvesAnderson, R. I.R. I.AndersonAnglada Varela, E.E.Anglada VarelaAntoja, T.T.AntojaBaines, D.D.BainesBaker, S. G.S. G.BakerBalaguer-Núñez, L.L.Balaguer-NúñezBalbinot, E.E.BalbinotBalog, Z.Z.BalogBarache, C.C.BaracheBarbato, D.D.BarbatoBarros, M.M.BarrosBarstow, M. A.M. A.BarstowBartolomé, S.S.BartoloméBassilana, J. -L.J. -L.BassilanaBauchet, N.N.BauchetBECCIANI, UgoUgoBECCIANIBELLAZZINI, MicheleMicheleBELLAZZINIBerihuete, A.A.BerihueteBernet, M.M.BernetBERTONE, StefanoStefanoBERTONEBianchi, L.L.BianchiBinnenfeld, A.A.BinnenfeldBlanco-Cuaresma, S.S.Blanco-CuaresmaBoch, T.T.BochBombrun, A.A.BombrunBossini, D.D.BossiniBouquillon, S.S.BouquillonBRAGAGLIA, AngelaAngelaBRAGAGLIABramante, L.L.BramanteBreedt, E.E.BreedtBressan, A.A.BressanBrouillet, N.N.BrouilletBRUGALETTA, ElisaElisaBRUGALETTABUCCIARELLI, BeatriceBeatriceBUCCIARELLIBurlacu, A.A.BurlacuButkevich, A. G.A. G.ButkevichBUZZI, RaffaellaRaffaellaBUZZICaffau, E.E.CaffauCancelliere, R.R.CancelliereCantat-Gaudin, T.T.Cantat-GaudinCarlucci, T.T.CarlucciCarrasco, J. M.J. M.CarrascoCasamiquela, L.L.CasamiquelaCASTELLANI, MarcoMarcoCASTELLANICastro-Ginard, A.A.Castro-GinardChaoul, L.L.ChaoulCharlot, P.P.CharlotChemin, L.L.CheminChiaramida, V.V.ChiaramidaChiavassa, A.A.ChiavassaChornay, N.N.ChornayCOMORETTO, GiovanniGiovanniCOMORETTOContursi, G.G.ContursiCooper, W. J.W. J.CooperCornez, T.T.CornezCowell, S.S.CowellCrifo, F.F.CrifoCropper, M.M.CropperCROSTA, MariateresaMariateresaCROSTACrowley, C.C.CrowleyDafonte, C.C.DafonteDapergolas, A.A.DapergolasDavid, P.P.Davidde Laverny, P.P.de LavernyDE LUISE, FioreFioreDE LUISEDe March, R.R.De MarchDe Ridder, J.J.De Ridderde Souza, R.R.de Souzade Torres, A.A.de Torresdel Peloso, E. F.E. F.del Pelosodel Pozo, E.E.del PozoDelbo, M.M.DelboDelgado, A.A.DelgadoDelisle, J. -B.J. -B.DelisleDemouchy, C.C.DemouchyDharmawardena, T. E.T. E.DharmawardenaDiakite, S.S.DiakiteDISTEFANO, Elisa Maria CarmelaElisa Maria CarmelaDISTEFANODolding, C.C.DoldingEnke, H.H.EnkeFabre, C.C.FabreFABRIZIO, MicheleMicheleFABRIZIOFaigler, S.S.FaiglerFedorets, G.G.FedoretsFernique, P.P.FerniqueFigueras, F.F.FiguerasFournier, Y.Y.FournierFouron, C.C.FouronFragkoudi, F.F.FragkoudiGAI, MarioMarioGAIGarcia-Gutierrez, A.A.Garcia-GutierrezGarcia-Reinaldos, M.M.Garcia-ReinaldosGarcía-Torres, M.M.García-TorresGAROFALO, AlessiaAlessiaGAROFALOGavel, A.A.GavelGerlach, E.E.GerlachGeyer, R.R.GeyerGIACOBBE, PaoloPaoloGIACOBBEGilmore, G.G.GilmoreGirona, S.S.GironaGiuffrida, G.G.GiuffridaGomel, R.R.GomelGomez, A.A.GomezGonzález-Núñez, J.J.González-NúñezGonzález-Santamaría, I.I.González-SantamaríaGonzález-Vidal, J. J.J. J.González-VidalGranvik, M.M.GranvikGuillout, P.P.GuilloutGuiraud, J.J.GuiraudGutiérrez-Sánchez, R.R.Gutiérrez-SánchezGuy, L. P.L. P.GuyHauser, M.M.HauserHaywood, M.M.HaywoodHelmer, A.A.HelmerHelmi, A.A.HelmiSarmiento, M. H.M. H.SarmientoHidalgo, S. L.S. L.HidalgoHilger, T.T.HilgerHładczuk, N.N.HładczukHobbs, D.D.HobbsHolland, G.G.HollandHuckle, H. E.H. E.HuckleJardine, K.K.JardineJasniewicz, G.G.JasniewiczJean-Antoine Piccolo, A.A.Jean-Antoine PiccoloJiménez-Arranz, Ó.Ó.Jiménez-ArranzJuaristi Campillo, J.J.Juaristi CampilloJulbe, F.F.JulbeKarbevska, L.L.KarbevskaKervella, P.P.KervellaKhanna, S.S.KhannaKontizas, M.M.KontizasKordopatis, G.G.KordopatisKorn, A. J.A. J.KornKóspál, Á.Á.KóspálKostrzewa-Rutkowska, Z.Z.Kostrzewa-RutkowskaKruszyńska, K.K.KruszyńskaKun, M.M.KunLaizeau, P.P.LaizeauLambert, S.S.LambertLANZA, Antonino FrancescoAntonino FrancescoLANZALasne, Y.Y.LasneLe Campion, J. -F.J. -F.Le CampionLebreton, Y.Y.LebretonLebzelter, T.T.LebzelterLECCIA, SilvioSilvioLECCIALeclerc, N.N.LeclercLecoeur-Taibi, I.I.Lecoeur-TaibiLiao, S.S.LiaoLicata, E. L.E. L.LicataLindstrøm, H. E. P.H. E. P.LindstrømLister, T. A.T. A.ListerLivanou, E.E.LivanouLobel, A.A.LobelLorca, A.A.LorcaLoup, C.C.LoupMadrero Pardo, P.P.Madrero PardoMagdaleno Romeo, A.A.Magdaleno RomeoManagau, S.S.ManagauMann, R. G.R. G.MannManteiga, M.M.ManteigaMarchant, J. M.J. M.MarchantMARCONI, MarcellaMarcellaMARCONIMarcos, J.J.MarcosMarcos Santos, M. M. S.M. M. S.Marcos SantosMarín Pina, D.D.Marín PinaMARINONI, SilviaSilviaMARINONIMarocco, F.F.MaroccoMarshall, D. J.D. J.MarshallMartin Polo, L.L.Martin PoloMartín-Fleitas, J. M.J. M.Martín-FleitasMarton, G.G.MartonMary, N.N.MaryMasip, A.A.MasipMassari, D.D.MassariMastrobuono-Battisti, A.A.Mastrobuono-BattistiMazeh, T.T.MazehMcMillan, P. J.P. J.McMillanMESSINA, SergioSergioMESSINAMichalik, D.D.MichalikMillar, N. R.N. R.MillarMints, A.A.MintsMolina, D.D.MolinaMOLINARO, RobertoRobertoMOLINAROMolnár, L.L.MolnárMonari, G.G.MonariMonguió, M.M.MonguióMONTEGRIFFO, PaoloPaoloMONTEGRIFFOMontero, A.A.MonteroMor, R.R.MorMora, A.A.MoraMORBIDELLI, RobertoRobertoMORBIDELLIMorel, T.T.MorelMorris, D.D.MorrisMURAVEVA, TatianaTatianaMURAVEVAMurphy, C. P.C. P.MurphyMUSELLA, ILARIAILARIAMUSELLANagy, Z.Z.NagyNoval, L.L.NovalOcaña, F.F.OcañaOgden, A.A.OgdenOrdenovic, C.C.OrdenovicOsinde, J. O.J. O.OsindePagani, C.C.PaganiPAGANO, IsabellaIsabellaPAGANOPalaversa, L.L.PalaversaPalicio, P. A.P. A.PalicioPallas-Quintela, L.L.Pallas-QuintelaPanahi, A.A.PanahiPayne-Wardenaar, S.S.Payne-WardenaarPeñalosa Esteller, X.X.Peñalosa EstellerPenttilä, A.A.PenttiläPichon, B.B.PichonPIERSIMONI, Anna MarinaAnna MarinaPIERSIMONIPineau, F. -X.F. -X.PineauPlachy, E.E.PlachyPlum, G.G.PlumPOGGIO, EloisaEloisaPOGGIOPrša, A.A.PršaRacero, E.E.RaceroRagaini, S.S.RagainiRAINER, MonicaMonicaRAINERRamos, P.P.RamosRamos-Lerate, M.M.Ramos-LerateRE FIORENTIN, PaolaPaolaRE FIORENTINRegibo, S.S.RegiboRichards, P. J.P. J.RichardsRios Diaz, C.C.Rios DiazRIPEPI, VincenzoVincenzoRIPEPIRIVA, AlbertoAlbertoRIVARix, H. -W.H. -W.RixRixon, G.G.RixonRobichon, N.N.RobichonRobin, A. C.A. C.RobinRobin, C.C.RobinRoelens, M.M.RoelensRogues, H. R. O.H. R. O.RoguesRohrbasser, L.L.RohrbasserRomero-Gómez, M.M.Romero-GómezRowell, N.N.RowellRoyer, F.F.RoyerRuz Mieres, D.D.Ruz MieresRybicki, K. A.K. A.RybickiSadowski, G.G.SadowskiSáez Núñez, A.A.Sáez NúñezSagristà Sellés, A.A.Sagristà SellésSahlmann, J.J.SahlmannSalguero, E.E.SalgueroSamaras, N.N.SamarasSanchez Gimenez, V.V.Sanchez GimenezSANNA, NicolettaNicolettaSANNASantoveña, R.R.SantoveñaSARASSO, Maria MargheritaMaria MargheritaSARASSOSchultheis, M.M.SchultheisSCIACCA, EvaEvaSCIACCASegol, M.M.SegolSegovia, J. C.J. C.SegoviaSégransan, D.D.SégransanSemeux, D.D.SemeuxShahaf, S.S.ShahafSiddiqui, H. I.H. I.SiddiquiSiebert, A.A.SiebertSiltala, L.L.SiltalaSilvelo, A.A.SilveloSlezak, E.E.SlezakSlezak, I.I.SlezakSMART, Richard LaurenceRichard LaurenceSMARTSnaith, O. N.O. N.SnaithSolano, E.E.SolanoSolitro, F.F.SolitroSouami, D.D.SouamiSouchay, J.J.SouchaySPAGNA, AlessandroAlessandroSPAGNASpina, L.L.SpinaSpoto, F.F.SpotoSteele, I. A.I. A.SteeleSteidelmüller, H.H.SteidelmüllerStephenson, C. A.C. A.StephensonSüveges, M.M.SüvegesSurdej, J.J.SurdejSzabados, L.L.SzabadosSzegedi-Elek, E.E.Szegedi-ElekTaris, F.F.TarisTaylor, M. B.M. B.TaylorTolomei, L.L.TolomeiTonello, N.N.TonelloTorra, F.F.TorraTorra, J.J.TorraTorralba Elipe, G.G.Torralba ElipeTrabucchi, M.M.TrabucchiTsounis, A. T.A. T.TsounisTuron, C.C.TuronUlla, A.A.UllaUnger, N.N.UngerVaillant, M. V.M. V.Vaillantvan Dillen, E.E.van Dillenvan Reeven, W.W.van ReevenVanel, O.O.VanelVECCHIATO, AlbertoAlbertoVECCHIATOViala, Y.Y.VialaVicente, D.D.VicenteVoutsinas, S.S.VoutsinasWeiler, M.M.WeilerWevers, T.T.WeversWyrzykowski, Ł.Ł.WyrzykowskiYoldas, A.A.YoldasYvard, P.P.YvardZhao, H.H.ZhaoZorec, J.J.ZorecZucker, S.S.ZuckerZwitter, T.T.Zwitter2025-02-252025-02-2520230004-6361http://hdl.handle.net/20.500.12386/36216The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epoch survey, Gaia also observes several million extragalactic objects down to a magnitude of G ∼ 21 mag. Due to the nature of the Gaia onboard-selection algorithms, these are mostly point-source-like objects. Using data provided by the satellite, we have identified quasar and galaxy candidates via supervised machine learning methods, and estimate their redshifts using the low resolution BP/RP spectra. We further characterise the surface brightness profiles of host galaxies of quasars and of galaxies from pre-defined input lists. Here we give an overview of the processing of extragalactic objects, describe the data products in Gaia DR3, and analyse their properties. Two integrated tables contain the main results for a high completeness, but low purity (50−70%), set of 6.6 million candidate quasars and 4.8 million candidate galaxies. We provide queries that select purer sub-samples of these containing 1.9 million probable quasars and 2.9 million probable galaxies (both ∼95% purity). We also use high quality BP/RP spectra of 43 thousand high probability quasars over the redshift range 0.05−4.36 to construct a composite quasar spectrum spanning restframe wavelengths from 72−1000 nm. <P />Full Table 8 is only available at the CDS via anonymous ftp to <A href="https://cdsarc.cds.unistra.fr">cdsarc.cds.unistra.fr</A> (ftp://130.79.128.5) or via <A href="https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/674/A41">https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/674/A41</A>....STAMPAenArticle10.1051/0004-6361/2022432322-s2.0-85163530624http://arxiv.org/abs/2206.05681v12023A&A...674A..41GFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation