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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A multimembership catalogue for 1876 open clusters using UCAC4 data

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Autor(es):
Sampedro, L. ; Dias, W. S. ; Alfaro, E. J. ; Monteiro, H. ; Molino, A.
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: Monthly Notices of the Royal Astronomical Society; v. 470, n. 4, p. 3937-3945, OCT 2017.
Citações Web of Science: 8
Resumo

The main objective of this work is to determine the cluster members of 1876 open clusters, using positions and proper motions of the astrometric fourth United States Naval Observatory (USNO) CCD Astrograph Catalog (UCAC4). For this purpose, we apply three different methods, all based on a Bayesian approach, but with different formulations: a purely parametric method, another completely non-parametric algorithm and a third, recently developed by Sampedro \& Alfaro, using both formulations at different steps of the whole process. The first and second statistical moments of the members' phase-space subspace, obtained after applying the three methods, are compared for every cluster. Although, on average, the three methods yield similar results, there are also specific differences between them, as well as for some particular clusters. The comparison with other published catalogues shows good agreement. We have also estimated, for the first time, the mean proper motion for a sample of 18 clusters. The results are organized in a single catalogue formed by two main files, one with the most relevant information for each cluster, partially including that in UCAC4, and the other showing the individual membership probabilities for each star in the cluster area. The final catalogue, with an interface design that enables an easy interaction with the user, is available in electronic format at the Stellar Systems Group (SSG-IAA) web site (http://ssg.iaa.es/en/content/sampedro-cluster-catalog). (AU)

Processo FAPESP: 16/21664-2 - The Southern-Physics of the local universe survey: calibração, catalogação e exploração científica
Beneficiário:Laura Maria Sampedro Hernandez
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 14/11806-9 - Desafios para a nova geração de mapeamentos fotométricos de grande campo como o J-PAS
Beneficiário:Alberto Molino Benito
Linha de fomento: Bolsas no Brasil - Pós-Doutorado