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A Gaia DR2 view of the Open Cluster population in the Milky Way

dc.contributor.authorCANTAT-GAUDIN, T.
dc.contributor.authorJORDI, C.
dc.contributor.authorVALLENARI, A.
dc.contributor.authorBRAGAGLIA, A.
hal.structure.identifierUniversitat de Barcelona [UB]
dc.contributor.authorBALAGUER-NÚÑEZ, L.
hal.structure.identifierM2A 2018
dc.contributor.authorSOUBIRAN, C.
dc.contributor.authorBOSSINI, D.
hal.structure.identifierUniversidade de Lisboa = University of Lisbon = Université de Lisbonne [ULISBOA]
dc.contributor.authorMOITINHO, A.
dc.contributor.authorCASTRO-GINARD, A.
dc.contributor.authorKRONE-MARTINS, A.
hal.structure.identifierM2A 2018
dc.contributor.authorCASAMIQUELA, L.
dc.contributor.authorSORDO, R.
dc.contributor.authorCARRERA, R.
dc.date.issued2018
dc.identifier.issn0004-6361
dc.description.abstractEnOpen clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies. The second Gaia data release contains precise astrometry at the sub-milliarcsecond level and homogeneous photometry at the mmag level, that can be used to characterise a large number of clusters over the entire sky. In this study we aim to a establish list of members and derive mean parameters, in particular distances, for as many clusters as possible, making use of Gaia data alone. We compile a list of thousands of known or putative clusters from the literature. We then apply an unsupervised membership assignment code, UPMASK, to the Gaia DR2 data contained within the fields of those clusters. We obtained a list of members and cluster parameters for 1212 clusters. As expected, the youngest clusters are seen to be tightly distributed near the Galactic plane and to trace the spiral arms of the Milky Way, while older objects are more uniformly distributed, deviate further from the plane, and tend to be located at larger Galactocentric distances. Thanks to the quality of GaiaDR2 astrometry, the fully homogeneous parameters derived in this study are the most precise to date. Furthermore, we report on the serendipitous discovery of 54 new open clusters in the fields analysed during this study.
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enA Gaia DR2 view of the Open Cluster population in the Milky Way
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201833476
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1805.08726
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.A93
bordeaux.volume618
bordeaux.peerReviewedoui
hal.identifierhal-01799654
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01799654v1
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