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Age determination for 269 $Gaia$ DR2 Open Clusters

dc.contributor.authorBOSSINI, D.
dc.contributor.authorVALLENARI, A.
dc.contributor.authorBRAGAGLIA, A.
hal.structure.identifierInstitut de Ciencies del Cosmos [ICCUB]
dc.contributor.authorCANTAT-GAUDIN, T.
dc.contributor.authorSORDO, R.
hal.structure.identifierUniversitat de Barcelona [UB]
dc.contributor.authorBALAGUER-NÚÑEZ, L.
hal.structure.identifierInstitut de Ciencies del Cosmos [ICCUB]
dc.contributor.authorJORDI, C.
hal.structure.identifierUniversidade de Lisboa = University of Lisbon = Université de Lisbonne [ULISBOA]
dc.contributor.authorMOITINHO, A.
hal.structure.identifierM2A 2019
dc.contributor.authorSOUBIRAN, C.
hal.structure.identifierM2A 2019
dc.contributor.authorCASAMIQUELA, L.
dc.contributor.authorCARRERA, R.
hal.structure.identifierUppsala University
dc.contributor.authorHEITER, U.
dc.date.issued2019
dc.identifier.issn0004-6361
dc.description.abstractEn$Context$. 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 a better understanding of the disc properties. $Aims$. The aim of the paper is to improve the knowledge of cluster parameters, using only the unprecedented quality of the Gaia photometry and astrometry. $Methods$. We make use of the membership determination based on the precise Gaia astrometry and photometry. We apply anautomated Bayesian tool, BASE-9, to fit stellar isochrones on the observed G, GBP, GRP magnitudes of the high probability member stars. $Results$. 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.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enAstrophysics - Solar and Stellar Astrophysics
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enAge determination for 269 $Gaia$ DR2 Open Clusters
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201834693
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1901.04733
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA108
bordeaux.volume623
bordeaux.peerReviewedoui
hal.identifierhal-02005338
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02005338v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2019&rft.volume=623&rft.spage=A108&rft.epage=A108&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=BOSSINI,%20D.&VALLENARI,%20A.&BRAGAGLIA,%20A.&CANTAT-GAUDIN,%20T.&SORDO,%20R.&rft.genre=article


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