2024-03-29T13:39:03Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1674102020-12-13T09:11:54Zcom_10261_97com_10261_4col_10261_350
00925njm 22002777a 4500
dc
Sampedro, Laura
author
Dias, W.S.
author
Alfaro, Emilio J.
author
Monteiro, H.
author
Molino, Alberto
author
2017
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 aBayesian approach, butwith 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).© 2017 The Authors.
Monthly Notices of the Royal Astronomical Society 470(4): 3937- 3945 (2017)
http://hdl.handle.net/10261/167410
10.1093/mnras/stx1485
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
Catalogues
Methods: statistical
Open clusters and associations: general
A multimembership catalogue for 1876 open clusters using UCAC4 data