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gaia data release 3 documentation

14 Validation

14.7 Open and globular clusters

Author(s): Antonella Vallenari, T. Cantat-Gaudin, L. Spina, D. Bossini

The analysis with open clusters makes use of two data sets concerning astrometry and integrated photometry: a selection of about 200 clusters with well known parameters (thereafter best data set) for a total of 70 000 stars about; and a wider sample of 2043 clusters including 121 000 stars (thereafter whole sample) (Cantat-Gaudin et al. 2020). Cluster member selection is obtained using proper motions and parallaxes. Only the whole sample is used for astrophysical parameter validation. Finally, we make use of two external reference Catalogues, namely Dias et al. (2014) (thereafter DAML), Kharchenko et al. (2013) (thereafter MWSC).