Astrometric star-cluster membership probability: application to the case of M 37 with Gaia EDR3
Date Issued
2022
Author(s)
Abstract
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).
Volume
511
Issue
4
Start page
4702
Issn Identifier
0035-8711
Ads BibCode
2022MNRAS.511.4702G
Rights
open.access
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