Gaia Collaborationvan Leeuwen, F.F.van LeeuwenVALLENARI, AntonellaAntonellaVALLENARIJordi, C.C.JordiLindegren, L.L.LindegrenBastian, U.U.BastianPrusti, T.T.Prustide Bruijne, J. H. J.J. H. J.de BruijneBrown, A. G. A.A. G. A.BrownBabusiaux, C.C.BabusiauxBailer-Jones, C. A. L.C. A. L.Bailer-JonesGonzález-Marcos, A.A.González-MarcosGonzález-Núñez, J.J.González-NúñezGonzález-Vidal, J. J.J. J.González-VidalGranvik, M.M.GranvikGuerrier, A.A.GuerrierWalton, N. A.N. A.WaltonGuillout, P.P.GuilloutGuiraud, J.J.GuiraudGúrpide, A.A.GúrpideOsinde, J.J.OsindeCarrasco, J. M.J. M.CarrascoGutiérrez-Sánchez, R.R.Gutiérrez-SánchezGuy, L. P.L. P.GuyHaigron, R.R.HaigronHatzidimitriou, D.D.HatzidimitriouHaywood, M.M.HaywoodHeiter, U.U.HeiterHelmi, A.A.HelmiAerts, C.C.AertsHobbs, D.D.HobbsHofmann, W.W.HofmannCASTELLANI, MarcoMarcoCASTELLANIPANCINO, ELENAELENAPANCINOHoll, B.B.HollHolland, G.G.HollandHunt, J. A. S.J. A. S.HuntHypki, A.A.HypkiIcardi, V.V.IcardiIrwin, M.M.IrwinJevardat de Fombelle, G.G.Jevardat de FombelleJofré, P.P.JofréArenou, F.F.ArenouCharlot, P.P.CharlotJonker, P. G.P. G.JonkerBiermann, M.M.BiermannJorissen, A.A.JorissenJulbe, F.F.JulbeKarampelas, A.A.KarampelasKochoska, A.A.KochoskaKohley, R.R.KohleyKolenberg, K.K.KolenbergKontizas, E.E.KontizasKoposov, S. E.S. E.KoposovCharnas, J.J.CharnasKordopatis, G.G.KordopatisCropper, M.M.CropperPauwels, T.T.PauwelsKoubsky, P.P.KoubskyKrone-Martins, A.A.Krone-MartinsKudryashova, M.M.KudryashovaKull, I.I.KullBachchan, R. K.R. K.BachchanLacoste-Seris, F.F.Lacoste-SerisLANZA, Antonino FrancescoAntonino FrancescoLANZAChiavassa, A.A.ChiavassaLavigne, J. -B.J. -B.LavigneLe Poncin-Lafitte, C.C.Le Poncin-LafitteLebreton, Y.Y.LebretonPetit, J. -M.J. -M.PetitDRIMMEL, RonaldRonaldDRIMMELLebzelter, T.T.LebzelterLECCIA, SilvioSilvioLECCIALeclerc, N.N.LeclercLecoeur-Taibi, I.I.Lecoeur-TaibiLemaitre, V.V.LemaitreClotet, M.M.ClotetLenhardt, H.H.LenhardtLeroux, F.F.LerouxLiao, S.S.LiaoLICATA, ENRICOENRICOLICATARecio-Blanco, A.A.Recio-BlancoLindstrøm, H. E. P.H. E. P.LindstrømHøg, E.E.HøgLister, T. A.T. A.ListerLivanou, E.E.LivanouLobel, A.A.LobelCocozza, G.G.CocozzaLöffler, W.W.LöfflerLópez, M.M.LópezLorenz, D.D.LorenzMacDonald, I.I.MacDonaldMagalhães Fernandes, T.T.Magalhães FernandesRobin, A. C.A. C.RobinManagau, S.S.ManagauMann, R. G.R. G.MannKatz, D.D.KatzMantelet, G.G.ManteletCollins, R. S.R. S.CollinsMarchal, O.O.MarchalMarchant, J. M.J. M.MarchantMARCONI, MarcellaMarcellaMARCONIMARINONI, SILVIASILVIAMARINONIMARRESE, Paola MariaPaola MariaMARRESEMarschalkó, G.G.MarschalkóSarro, L. M.L. M.SarroMarshall, D. J.D. J.MarshallMartín-Fleitas, J. M.J. M.Martín-FleitasMartino, M.M.MartinoCostigan, G.G.CostiganGAI, MarioMarioGAIMary, N.N.MaryMatijevič, G.G.MatijevičMazeh, T.T.MazehMcMillan, P. J.P. J.McMillanMESSINA, SergioSergioMESSINAMichalik, D.D.MichalikSiopis, C.C.SiopisMillar, N. R.N. R.MillarMiranda, B. M. H.B. M. H.MirandaPanem, C.C.PanemMolina, D.D.MolinaMOLINARO, RobertoRobertoMOLINAROO'Mullane, W.W.O'MullaneMOLINARO, MarcoMarcoMOLINAROMolnár, L.L.MolnárMoniez, M.M.MoniezMONTEGRIFFO, PaoloPaoloMONTEGRIFFOMor, R.R.MorSmith, M.M.SmithMora, A.A.MoraJasniewicz, G.G.JasniewiczMORBIDELLI, RobertoRobertoMORBIDELLIMorel, T.T.MorelMorgenthaler, S.S.MorgenthalerMorris, D.D.MorrisGrebel, E. K.E. K.GrebelMulone, A. F.A. F.MuloneMuraveva, TatianaTatianaMuravevaMUSELLA, ILARIAILARIAMUSELLANarbonne, J.J.NarbonneSmith, K. W.K. W.SmithCrifo, F.F.CrifoNelemans, G.G.NelemansNICASTRO, LUCIANOLUCIANONICASTRONoval, L.L.NovalOrdénovic, C.C.OrdénovicOrdieres-Meré, J.J.Ordieres-MeréOsborne, P.P.OsborneHolland, A. D.A. D.HollandPagani, C.C.PaganiPAGANO, IsabellaIsabellaPAGANOPailler, F.F.PaillerCross, N. J. G.N. J. G.CrossSOZZETTI, AlessandroAlessandroSOZZETTIPalacin, H.H.PalacinPalaversa, L.L.PalaversaParsons, P.P.ParsonsPecoraro, M.M.PecoraroPedrosa, R.R.PedrosaPentikäinen, H.H.PentikäinenPichon, B.B.PichonHuc, C.C.HucPIERSIMONI, Anna MarinaAnna MarinaPIERSIMONICROSTA, MariateresaMariateresaCROSTAPineau, F. -X.F. -X.PineauThuillot, W.W.ThuillotPlachy, E.E.PlachyPlum, G.G.PlumPoujoulet, E.E.PoujouletPrša, A.A.PršaPULONE, LuigiLuigiPULONERagaini, S.S.RagainiRago, S.S.RagoRambaux, N.N.RambauxCrowley, C.C.CrowleyPassot, X.X.PassotRamos-Lerate, M.M.Ramos-LerateEvans, D. W.D. W.EvansRanalli, P.P.RanalliRauw, G.G.RauwRead, A.A.ReadRegibo, S.S.RegiboReylé, C.C.ReyléRibeiro, R. A.R. A.RibeiroRimoldini, L.L.RimoldiniDafonte, C.C.DafonteRIPEPI, VincenzoVincenzoRIPEPIRIVA, AlbertoAlbertoRIVAPerryman, M.M.Perrymanvan Reeven, W.W.van ReevenRixon, G.G.RixonRoelens, M.M.RoelensRomero-Gómez, M.M.Romero-GómezRowell, N.N.RowellRoyer, F.F.RoyerRuiz-Dern, L.L.Ruiz-DernDamerdji, Y.Y.DamerdjiSadowski, G.G.SadowskiSagristà Sellés, T.T.Sagristà SellésSahlmann, J.J.SahlmannSalgado, J.J.SalgadoViala, Y.Y.VialaBramante, L.L.BramanteSalguero, E.E.SalgueroSARASSO, Maria MargheritaMaria MargheritaSARASSOSavietto, H.H.SaviettoSchultheis, M.M.SchultheisDapergolas, A.A.DapergolasSCIACCA, EvaEvaSCIACCASegol, M.M.SegolSegovia, J. C.J. C.SegoviaSegransan, D.D.SegransanShih, I. -C.I. -C.ShihABBAS, UmmiUmmiABBASSMAREGLIA, RiccardoRiccardoSMAREGLIACacciari, C.C.CacciariSMART, Richard LaurenceRichard LaurenceSMARTSolano, E.E.SolanoDavid, P.P.DavidSolitro, F.F.SolitroSORDO, ROSANNAROSANNASORDOSoria Nieto, S.S.Soria NietoSouchay, J.J.SouchaySPAGNA, AlessandroAlessandroSPAGNASpoto, F.F.SpotoAbreu Aramburu, A.A.Abreu AramburuStampa, U.U.StampaSteele, I. A.I. A.SteeleCastañeda, J.J.CastañedaDavid, M.M.DavidSteidelmüller, H.H.SteidelmüllerStephenson, C. A.C. A.StephensonStoev, H.H.StoevSuess, F. F.F. F.SuessSüveges, M.M.SüvegesSurdej, J.J.SurdejSzabados, L.L.SzabadosAccart, S.S.AccartSzegedi-Elek, E.E.Szegedi-ElekTapiador, D.D.TapiadorDe Cat, P.P.De CatTaris, F.F.TarisChaoul, L.L.ChaoulTauran, G.G.TauranTaylor, M. B.M. B.TaylorTeixeira, R.R.TeixeiraTerrett, D.D.TerrettTingley, B.B.TingleyTrager, S. C.S. C.TragerAguado, J. J.J. J.AguadoTuron, C.C.TuronJordan, S.S.JordanUlla, A.A.UllaUtrilla, E.E.UtrillaVALENTINI, GaetanoGaetanoVALENTINICheek, N.N.Cheekvan Elteren, A.A.van ElterenVan Hemelryck, E.E.Van HemelryckvanLeeuwen, M.M.vanLeeuwenVaradi, M.M.VaradiVECCHIATO, AlbertoAlbertoVECCHIATOAllan, P. M.P. M.AllanPourbaix, D.D.PourbaixVeljanoski, J.J.VeljanoskiVia, T.T.ViaVicente, D.D.VicenteVogt, S.S.VogtVoss, H.H.VossDe Angeli, F.F.De AngeliVotruba, V.V.VotrubaVoutsinas, S.S.VoutsinasWalmsley, G.G.WalmsleyWeiler, M.M.Weilerde Felice, F.F.de FeliceAllasia, W.W.AllasiaWeingrill, K.K.WeingrillWevers, T.T.WeversWyrzykowski, Ł.Ł.WyrzykowskiYoldas, A.A.YoldasŽerjal, M.M.ŽerjalZucker, S.S.ZuckerFabricius, C.C.FabriciusZurbach, C.C.ZurbachZwitter, T.T.Zwitterde Laverny, P.P.de LavernyAlecu, A.A.AlecuALTAVILLA, GIUSEPPEGIUSEPPEALTAVILLAAllen, M.M.AllenAllende Prieto, C.C.Allende PrietoAmorim, A.A.AmorimAnglada-Escudé, G.G.Anglada-EscudéArsenijevic, V.V.ArsenijevicAzaz, S.S.AzazBalm, P.P.BalmGuerra, R.R.GuerraDE LUISE, FioreFioreDE LUISEBeck, M.M.BeckBernstein, H. -H.H. -H.BernsteinÁlvarez, M. A.M. A.ÁlvarezBigot, L.L.BigotBijaoui, A.A.BijaouiBlasco, C.C.BlascoBonfigli, M.M.BonfigliBono, G.G.BonoBoudreault, S.S.BoudreaultBressan, A.A.BressanDe March, R.R.De MarchBrown, S.S.BrownHernández, J.J.HernándezBrunet, P. -M.P. -M.BrunetEyer, L.L.EyerBunclark, P.P.BunclarkBuonanno, R.R.BuonannoButkevich, A. G.A. G.ButkevichCarret, C.C.CarretCarrion, C.C.CarrionChemin, L.L.CheminDE MARTINO, DomitillaDomitillaDE MARTINOChéreau, F.F.ChéreauCORCIONE, LeonardoLeonardoCORCIONEDarmigny, E.E.DarmignyJean-Antoine-Piccolo, A.A.Jean-Antoine-PiccoloAlves, J.J.Alvesde Boer, K. S.K. S.de Boerde Teodoro, P.P.de Teodorode Zeeuw, P. T.P. T.de ZeeuwDelle Luche, C.C.Delle LucheDomingues, C. D.C. D.Dominguesde Souza, R.R.de SouzaDubath, P.P.DubathFodor, F.F.FodorFrézouls, B.B.FrézoulsFries, A.A.FriesFustes, D.D.FustesAnderson, R. I.R. I.AndersonMasana, E.E.MasanaFyfe, D.D.FyfeGallardo, E.E.GallardoGallegos, J.J.GallegosDebosscher, J.J.DebosscherGARDIOL, DanieleDanieleGARDIOLGebran, M.M.GebranGomboc, A.A.GombocGómez, A.A.GómezGrux, E.E.GruxGueguen, A.A.GueguenAndrei, A. H.A. H.AndreiHeyrovsky, A.A.HeyrovskyMessineo, R.R.MessineoHoar, J.J.Hoardel Pozo, E.E.del PozoIannicola, G.G.IannicolaIsasi Parache, Y.Y.Isasi ParacheJanotto, A. -M.A. -M.JanottoJoliet, E.E.JolietJonckheere, A.A.JonckheereKeil, R.R.KeilKim, D. -W.D. -W.KimAnglada Varela, E.E.Anglada VarelaKlagyivik, P.P.KlagyivikKlar, J.J.KlarDelbo, M.M.DelboMowlavi, N.N.MowlaviKnude, J.J.KnudeKochukhov, O.O.KochukhovKolka, I.I.KolkaKos, J.J.KosKutka, A.A.KutkaLainey, V.V.LaineyLeBouquin, D.D.LeBouquinAntiche, E.E.AnticheLiu, C.C.LiuKontizas, M.M.KontizasLOREGGIA, DavideDavideLOREGGIAMakarov, V. V.V. V.MakarovNienartowicz, K.K.NienartowiczMarseille, M. G.M. G.MarseilleMartayan, C.C.MartayanMartinez-Rubi, O.O.Martinez-RubiMassart, B.B.MassartMeynadier, F.F.MeynadierMignot, S.S.MignotAntoja, T.T.AntojaDelgado, A.A.DelgadoMunari, U.U.MunariNguyen, A. -T.A. -T.NguyenNordlander, T.T.NordlanderO'Flaherty, K. S.K. S.O'FlahertyOrdóñez-Blanco, D.D.Ordóñez-BlancoOcvirk, P.P.OcvirkOlias Sanz, A.A.Olias SanzOrtiz, P.P.OrtizOsorio, J.J.OsorioOszkiewicz, D.D.OszkiewiczRANDICH, Maria SofiaMaria SofiaRANDICHAntón, S.S.AntónOuzounis, A.A.OuzounisPalmer, M.M.PalmerPark, P.P.ParkPasquato, E.E.PasquatoPeltzer, C.C.PeltzerPanuzzo, P.P.PanuzzoPeralta, J.J.PeraltaPéturaud, F.F.PéturaudPieniluoma, T.T.PieniluomaDelgado, H. E.H. E.DelgadoPigozzi, E.E.PigozziArcay, B.B.ArcayPoels, J.J.PoelsPrat, G.G.PratProd'homme, T.T.Prod'hommeRaison, F.F.RaisonRebordao, J. M.J. M.RebordaoRisquez, D.D.RisquezPortell, J.J.PortellRocca-Volmerange, B.B.Rocca-VolmerangeDi Matteo, P.P.Di MatteoRosen, S.S.RosenRuiz-Fuertes, M. I.M. I.Ruiz-FuertesBach, N.N.BachRUSSO, FedericoFedericoRUSSOSembay, S.S.SembaySerraller Vizcaino, I.I.Serraller VizcainoShort, A.A.ShortSiebert, A.A.SiebertSilva, H.H.SilvaSinachopoulos, D.D.SinachopoulosDiakite, S.S.DiakiteRichards, P. J.P. J.RichardsSlezak, E.E.SlezakSoffel, M.M.SoffelBaker, S. G.S. G.BakerSosnowska, D.D.SosnowskaStraižys, V.V.Straižyster Linden, M.M.ter LindenTerrell, D.D.TerrellTheil, S.S.TheilTiede, C.C.TiedeDISTEFANO, Elisa Maria CarmelaElisa Maria CarmelaDISTEFANOTroisi, L.L.TroisiTsalmantza, P.P.TsalmantzaRiello, M.M.RielloTur, D.D.TurJansen, F.F.JansenVaccari, M.M.VaccariVachier, F.F.VachierValles, P.P.VallesVan Hamme, W.W.Van HammeVeltz, L.L.VeltzDolding, C.C.DoldingVirtanen, J.J.VirtanenWallut, J. -M.J. -M.WallutWichmann, R.R.WichmannWilkinson, M. I.M. I.WilkinsonSeabroke, G. M.G. M.SeabrokeBalaguer-Núñez, L.L.Balaguer-NúñezZiaeepour, H.H.ZiaeepourZschocke, S.S.ZschockeTanga, P.P.TangaThévenin, F.F.ThéveninDos Anjos, S.S.Dos AnjosTorra, J.J.TorraEls, S. G.S. G.ElsGracia-Abril, G.G.Gracia-AbrilCOMORETTO, GiovanniGiovanniCOMORETTOGarcia-Reinaldos, M.M.Garcia-ReinaldosLock, T.T.LockBarache, C.C.BaracheMercier, E.E.MercierAltmann, M.M.AltmannAndrae, R.R.AndraeDrazinos, P.P.DrazinosAstraatmadja, T. L.T. L.AstraatmadjaBellas-Velidis, I.I.Bellas-VelidisBenson, K.K.BensonBerthier, J.J.BerthierBlomme, R.R.BlommeBusso, G.G.BussoCarry, B.B.CarryBarata, C.C.BarataCELLINO, AlbertoAlbertoCELLINOCLEMENTINI, GisellaGisellaCLEMENTINIDurán, J.J.DuránCowell, S.S.CowellCreevey, O.O.CreeveyCuypers, J.J.CuypersDavidson, M.M.DavidsonDe Ridder, J.J.De Ridderde Torres, A.A.de TorresDelchambre, L.L.DelchambreDELL'ORO, AldoAldoDELL'OROBarbier, A.A.BarbierDucourant, C.C.DucourantKorn, A. J.A. J.KornFrémat, Y.Y.FrématGarcía-Torres, M.M.García-TorresGosset, E.E.GossetHalbwachs, J. -L.J. -L.HalbwachsHambly, N. C.N. C.HamblyHarrison, D. L.D. L.HarrisonHauser, M.M.HauserHestroffer, D.D.HestrofferHodgkin, S. T.S. T.HodgkinBarblan, F.F.BarblanDzigan, Y.Y.DziganHuckle, H. E.H. E.HuckleHutton, A.A.HuttonBarrado y Navascués, D.D.Barrado y NavascuésBarros, M.M.BarrosBarstow, M. A.M. A.BarstowBECCIANI, UgoUgoBECCIANIBELLAZZINI, MicheleMicheleBELLAZZINIKlioner, S. A.S. A.KlionerBello García, A.A.Bello GarcíaBelokurov, V.V.BelokurovEdvardsson, B.B.EdvardssonBendjoya, P.P.BendjoyaBerihuete, A.A.BerihueteBianchi, L.L.BianchiBienaymé, O.O.BienayméBillebaud, F.F.BillebaudBlagorodnova, N.N.BlagorodnovaBlanco-Cuaresma, S.S.Blanco-CuaresmaBoch, T.T.BochLammers, U.U.LammersBombrun, A.A.BombrunSartoretti, P.P.SartorettiBorrachero, R.R.BorracheroBouquillon, S.S.BouquillonBourda, G.G.BourdaBouy, H.H.BouyBRAGAGLIA, AngelaAngelaBRAGAGLIABreddels, M. A.M. A.BreddelsBrouillet, N.N.BrouilletBrüsemeister, T.T.BrüsemeisterBUCCIARELLI, BeatriceBeatriceBUCCIARELLILuri, X.X.LuriEnke, H.H.EnkeBurgess, P.P.BurgessBurgon, R.R.BurgonBurlacu, A.A.BurlacuBUSONERO, DeborahDeborahBUSONEROBUZZI, RAFFAELLARAFFAELLABUZZICaffau, E.E.CaffauCambras, J.J.CambrasCampbell, H.H.CampbellCancelliere, R.R.CancelliereCantat-Gaudin, T.T.Cantat-GaudinEvans, N. W.N. W.EvansMignard, F.F.MignardCarlucci, T.T.CarlucciEynard Bontemps, G.G.Eynard BontempsFabre, C.C.FabreFABRIZIO, MicheleMicheleFABRIZIOFaigler, S.S.FaiglerFalcão, A. J.A. J.FalcãoLanzafame, Alessandro CarmeloAlessandro CarmeloLanzafameFarràs Casas, M.M.Farràs CasasFederici, L.L.FedericiFedorets, G.G.FedoretsSiddiqui, H. I.H. I.SiddiquiFernández-Hernández, J.J.Fernández-HernándezFernique, P.P.FerniqueFienga, A.A.FiengaFigueras, F.F.FiguerasFilippi, F.F.FilippiFindeisen, K.K.FindeisenManteiga, M.M.ManteigaFonti, A.A.FontiFouesneau, M.M.FouesneauFraile, E.E.FraileFraser, M.M.FraserSoubiran, C.C.SoubiranFuchs, J.J.FuchsGai, M.M.GaiGALLETI, SILVIASILVIAGALLETIGalluccio, L.L.GalluccioGarabato, D.D.GarabatoMoitinho, A.A.MoitinhoGarcía-Sedano, F.F.García-SedanoGAROFALO, AlessiaAlessiaGAROFALOGarralda, N.N.GarraldaGavras, P.P.GavrasGerssen, J.J.GerssenValette, V.V.ValetteGeyer, R.R.GeyerGilmore, G.G.GilmoreGirona, S.S.GironaGiuffrida, G.G.GiuffridaMuinonen, K.K.MuinonenGomes, M.M.Gomes2020-11-022020-11-0220170004-6361http://hdl.handle.net/20.500.12386/28118Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry, the proper motion and parallax are calculated using Hipparcos and Tycho-2 positions in 1991.25 as prior information. <BR /> Aims: We investigate the scientific potential and limitations of the TGAS component by means of the astrometric data for open clusters. <BR /> Methods: Mean cluster parallax and proper motion values are derived taking into account the error correlations within the astrometric solutions for individual stars, an estimate of the internal velocity dispersion in the cluster, and, where relevant, the effects of the depth of the cluster along the line of sight. Internal consistency of the TGAS data is assessed. <BR /> Results: Values given for standard uncertainties are still inaccurate and may lead to unrealistic unit-weight standard deviations of least squares solutions for cluster parameters. Reconstructed mean cluster parallax and proper motion values are generally in very good agreement with earlier Hipparcos-based determination, although the Gaia mean parallax for the Pleiades is a significant exception. We have no current explanation for that discrepancy. Most clusters are observed to extend to nearly 15 pc from the cluster centre, and it will be up to future Gaia releases to establish whether those potential cluster-member stars are still dynamically bound to the clusters. <BR /> Conclusions: The Gaia DR1 provides the means to examine open clusters far beyond their more easily visible cores, and can provide membership assessments based on proper motions and parallaxes. A combined HR diagram shows the same features as observed before using the Hipparcos data, with clearly increased luminosities for older A and F dwarfs. <P />Tables D.1 to D.19 are also available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/601/A19">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/601/A19STAMPAenArticle10.1051/0004-6361/2017305522-s2.0-85018580814000402313500019https://arxiv.org/pdf/1703.01131https://www.aanda.org/articles/aa/abs/2017/05/aa30552-17/aa30552-17.html2017A&A...601A..19GFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering