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2022MNRAS.511.4702G - Mon. Not. R. Astron. Soc., 511, 4702-4709 (2022/April-3)

Astrometric star-cluster membership probability: application to the case of M 37 with Gaia EDR3.

GRIGGIO M. and BEDIN L.R.

Abstract (from CDS):

In this work, starting from the well-accepted relations in literature, we introduce a new formalism to compute the astrometric membership probabilities for sources in star clusters, and we provide an application to the case of the open cluster M 37. The novelty of our approach is a refined - and magnitude-dependent - modelling of the parallax distribution of the field stars. We employ the here-derived list of members to estimate the cluster's mean systemic astrometric parameters, which are based on the most recent Gaia's catalogue (EDR3).

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): astrometry - (Galaxy:) open clusters and associations: individual: NGC 2099 (M 37) - catalogues

VizieR on-line data: <Available at CDS (J/MNRAS/511/4702): table.dat>

Simbad objects: 9412

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