DAMIANI, FrancescoFrancescoDAMIANIPRISINZANO, LoredanaLoredanaPRISINZANOJeffries, R. D.R. D.JeffriesSACCO, GIUSEPPE GERMANOGIUSEPPE GERMANOSACCORANDICH, Maria SofiaMaria SofiaRANDICHMICELA, GiuseppinaGiuseppinaMICELA2020-09-112020-09-1120170004-6361http://hdl.handle.net/20.500.12386/27328Context. Recent results using radial-velocity measurements from the Gaia-ESO Survey have led to the discovery of multiple kinematic populations across the Vela OB2 association. We present here a proper-motion study of the same region. <BR /> Aims: Our aim is to test whether or not the radial-velocity populations have a counterpart in proper-motion space, and if so, how the two sets of kinematical data complement each other. <BR /> Methods: This work is based on parallaxes and proper motions from the TGAS catalogue, as part of Gaia DR1. <BR /> Results: Two distinct proper-motion populations are found dispersed across 5 degrees (or 30 pc at their likely distances). Their detailed correspondence to the radial-velocity populations could not be tested because of the paucity of common objects. However, compelling indications are found that one of the new proper-motion populations consists mostly of members of the young cluster NGC 2547, and the other is related to the γ<SUP>2</SUP> Vel cluster. Constraints on the age of the two populations, both of which appear to be only 10-35 Myr old, and their possible mutual interactions within the last 1.5 Myr are discussed.STAMPAenArticle10.1051/0004-6361/2017308672-s2.0-85020021240000404648300131http://arxiv.org/abs/1705.03816v1https://www.aanda.org/articles/aa/abs/2017/06/aa30867-17/aa30867-17.html2017A&A...602L...1DFIS/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