{
  "id": "2202.07942",
  "version": "v1",
  "published": "2022-02-16T09:15:15.000Z",
  "updated": "2022-02-16T09:15:15.000Z",
  "title": "Astrometric star-cluster membership probability: application to the case of M 37 with Gaia EDR3",
  "authors": [
    "M. Griggio",
    "L. R. Bedin"
  ],
  "comment": "8 pages, 1 table, 7 figures (2 in low resolution). Accepted for publication in MNRAS on 2022, February 9",
  "categories": [
    "astro-ph.GA",
    "astro-ph.IM",
    "astro-ph.SR"
  ],
  "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 catalog (EDR3).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-02-16T09:15:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "astrometric star-cluster membership probability",
      "gaia edr3",
      "application",
      "clusters mean systemic astrometric parameters"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}