论文标题
使用GAIA DR2/EDR3数据在银河磁盘中发现的新的开放群集候选
New Open Cluster candidates Found in Galactic Disk Using Gaia DR2/EDR3 Data
论文作者
论文摘要
我们通过对Gaia DR2进行了早期分析来报告Gaia EDR3中541个新的开放群集候选者，该群集在太阳能社区（主要是d <3 kpc）中揭示了将近一千个开放式群集候选者（主要是d <3 kpc），该候选人居住在银河纬度| b | <20度。随后与已知簇列表的比较表明，与太阳2 kpc之内的群集样品大幅增加。我们通过开源pyupmask算法将成员概率分配给恒星，并通过每个候选者的等音参数估算物理参数。大多数新的候选人在颜色标记图中显示出少量的总正确运动分散和清晰的特征。此外，新候选者的金属性梯度与文献中的金属梯度一致。群集参数和成员星可通过匿名FTP在cdsarc.u-strasbg.fr（130.79.128.5）或https://cdsarc.unistra.fr/viz-fr/viz-bin/cat/cat/j/apjs获得。这些新对象的发现表明，Gaia数据中的开放群集样本仍未完整，并且在未来的研究中会发现更多的发现。
We report 541 new open cluster candidates in Gaia EDR3 through revisiting the cluster results from an earlier analysis of the Gaia DR2, which revealed nearly a thousand open cluster candidates in the solar neighborhood (mostly d < 3 kpc) resideing at Galactic latitudes |b| < 20 degrees. A subsequent comparison with lists of known clusters shows a large increases of the cluster samples within 2 kpc from the Sun. We assign membership probabilities to the stars through the open source pyUPMASK algorithm, and also estimate the physical parameters through isochrone fitting for each candidate. Most of the new candidates show small total proper motion dispersions and clear features in the color-magnitude diagrams. Besides, the metallicity gradient of the new candidates is consistent with those found in the literature. The cluster parameters and member stars are available at CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or via https://cdsarc.unistra.fr/viz-bin/cat/J/ApJS. The discovery of these new objects shows that the open cluster samples in Gaia data is still not complete, and more discoveries are expected in the future researches.
