Astrometric star-cluster membership probability: application to the case of M 37 with Gaia EDR3
arXiv:2202.07942 · doi:10.1093/mnras/stac391
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).
8 pages, 1 table, 7 figures. Accepted for publication in MNRAS on 2022, February 9. Corrected a typo in Equations 3 and 8 (September 2022)
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Cited by in corpus (8)
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- The Planetary Nebula in the 500 Myr old Open Cluster M37
- Exploring the origin of the extended main sequence turn off in M37 through the white dwarf cooling sequence
- The unusual planetary nebula nucleus in the Galactic open cluster M37 and six further hot white dwarf candidates
- Astro-photometric study of M37 with Gaia and wide-field ugi-imaging
- Signature of a chemical spread in the open cluster M37
- The broadening of the main sequence in the open cluster M38
- On the Age Calibration of Open Clusters using Red Clump Stars