论文标题
天文恒星群集会员资格概率:使用Gaia EDR3应用于M 37的情况
Astrometric star-cluster membership probability: application to the case of M 37 with Gaia EDR3
论文作者
论文摘要
在这项工作中,从文学中的良好关系开始,我们引入了一种新的形式主义,以计算星形簇中的源头源概率,我们为开放群集M 37的情况提供了一种应用。我们的方法的新颖性是我们精致的 - 幅度依赖性的 - 与现场恒星的偏见分布的建模。我们采用此处衍生的成员列表来估计集群的平均系统性星形参数,该参数基于最新的Gaia目录(EDR3)。
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).