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- W2128736161 abstract "<i>Aims. <i/>In this work we investigate the nature of 50 overdensities from the catalogue of Froebrich, Scholz, and Raftery (FSR) projected towards the Galactic anticentre, in the sector 160° <i>≤<i/> <i>≤<i/> 200°. The sample contains candidates with |<i>b<i/>| <i>≤<i/> 20° classified by FSR as probable open cluster (OC) and labelled with quality flags 2 and 3. Our main purpose is to determine the nature of these OC candidates and the fraction of these objects that are unknown OCs, as well as to derive astrophysical parameters (age, reddening, distance, core and cluster radii) for the clusters and to investigate the relationship among parameters.<i>Methods. <i/>The analysis is based on 2MASS <i>J<i/>, (<i>J<i/>–<i>H<i/>), and (<i>J<i/>–<i>K<i/><sub>s<sub/>) colour–magnitude diagrams (CMDs), and stellar radial density profiles (RDPs) built with decontamination tools. The tools are a field star decontamination algorithm, used to uncover the cluster's intrinsic CMD morphology, and colour–magnitude filters to isolate stars with a high probability of being cluster members.<i>Results. <i/>Out of the 50 objects, 16 (32%) are star clusters. We show that 9 (18%) overdensities are new OCs (FSR 735, FSR 807, FSR 812, FSR 826, FSR 852, FSR 904, FSR 941, FSR 953, and FSR 955) and 7 (14%) are previously studied or catalogued OCs (KKC1, FSR 795, Cz 22, FSR 828, FSR 856, Cz 24, and NGC 2234). These are OCs with ages in the range <i>5<i/> Myr to <i>1<i/> Gyr, at distances from the Sun 1.28 <i>d<i/><sub>⊙<sub/>(kpc) 5.78 and Galactocentric distances 8.5 <i>R<i/><sub>GC<sub/>(kpc) 12.9. We also derive parameters for the previously analysed OCs Cz 22 and NGC 2234. Five (10%) candidates are classified as uncertain cases, and the remaining objects are probable field fluctuations." @default.
- W2128736161 created "2016-06-24" @default.
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- W2128736161 date "2010-10-01" @default.
- W2128736161 modified "2023-10-17" @default.
- W2128736161 title "Towards a census of the Galactic anticentre star clusters: colour–magnitude diagram and structural analyses of a sample of 50 objects" @default.
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- W2128736161 doi "https://doi.org/10.1051/0004-6361/201014756" @default.
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