Bossini, D.D.BossiniVALLENARI, AntonellaAntonellaVALLENARIBRAGAGLIA, AngelaAngelaBRAGAGLIACantat-Gaudin, T.T.Cantat-GaudinSORDO, ROSANNAROSANNASORDOBalaguer-Núñez, L.L.Balaguer-NúñezJordi, C.C.JordiMoitinho, A.A.MoitinhoSoubiran, C.C.SoubiranCasamiquela, L.L.CasamiquelaCARRERA, JIMENEZ RICARDO JESUSJIMENEZ RICARDO JESUSCARRERAHeiter, U.U.Heiter2021-01-112021-01-1120190004-6361http://hdl.handle.net/20.500.12386/29644Context. The Gaia Second Data Release provides precise astrometry and photometry for more than 1.3 billion sources. This catalog opens a new era concerning the characterization of open clusters and test stellar models, paving the way for better understanding of the disk properties. <BR /> Aims: The aim of the paper is to improve the knowledge of cluster parameters, using only the unprecedented quality of the Gaia photometry and astrometry. <BR /> Methods: We have made use of the membership determination based on the precise Gaia astrometry and photometry. We applied an automated Bayesian tool, BASE-9, to fit stellar isochrones on the observed G, G<SUB>BP</SUB>, G<SUB>RP</SUB> magnitudes of the high probability member stars. <BR /> Results: We derive parameters such as age, distance modulus, and extinction for a sample of 269 open clusters, selecting only low reddening objects and discarding very young clusters, for which techniques other than isochrone-fitting are more suitable for estimating ages. <P />Full Tables A.1-A.3 are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr/">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/623/A108">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/623/A108</A>STAMPAenArticle10.1051/0004-6361/2018346932-s2.0-85063006093000460892200001https://www.aanda.org/articles/aa/full_html/2019/03/aa34693-18/aa34693-18.html2019A&A...623A.108BFIS/05 - ASTRONOMIA E ASTROFISICA