在天鹅座云中发现四个新的星团
Discovery of Four New Clusters in the Cygnus Cloud
摘要：
本文报道了在天鹅座方向发现的四个新的疏散星团（QC1，QC2，QC3和QC4），并根据Gaia DR 2的五个天体测量参数（l，b，\varpi，μ^*_α，μ_δ）对它们的成员进行了选择。我们还推导出每个新星系团的天体物理参数。通过拟合径向密度分布与King's轮廓来生成结构参数。使用太阳金属丰度，我们进行了等时线拟合的纯化颜色星等图（CMD），以实现集群的年龄。选取邻近区域的已知星系团NGC7062来验证我们的识别过程。对NGC7062的距离、红化和年龄的估算与文献值符合得很好。
英文摘要：
We report the discovery of four new open clusters (named as QC 1, QC 2, QC3 and QC 4) in the direction of Cygnus Cloud and select their members based on five astrometric parameters (l, b, \varpi, μ^*_α, μ_δ) of Gaia DR2. We also derive their astrophysical parameters for each new cluster. Structure parameters are generated by fitting the radial density distribution with King's profile. Using solar metallicity, we performed isochrone-fitting on their purified color-magnitude diagrams (CMDs) to achieve the age of the clusters. The known cluster NGC 7062 at adjacent area is chosen to verify our identification process. The estimated distance, reddening and age of NGC 7062 are in good agreement with the literature.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
