| Discovery of Four New Clusters in the Cygnus Cloud |
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| 作者姓名： | 秦松梅 李静 陈力 钟靖 |
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| 作者单位： | Physics and Space Science College;Key Laboratory for Research in Galaxies and Cosmology;Chinese Academy of Sciences South America Center for Astronomy;School of Astronomy and Space Science |
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| 基金项目： | supported by the National Natural Science Foundation of China(NSFC)under Grant No.11703019;China West Normal University Grants 17C053,17YC507 and 16E018;support from NSFC under Grant No.11661161016;the NSFC under Grant No.U1731129。 |
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| 摘 要： | We report the discovery of four new open clusters(named QC 1,QC 2,QC 3 and QC 4)in the direction of Cygnus Cloud and select their members based on five astrometric parameters(l,b,ω,μα*,μδ)of Gaia DR2.We also derive their astrophysical parameters for each new cluster.Structure parameters are generated by fitting the radial density distribution with a King’s profile.Using solar metallicity,we performed isochrone-fitting on their purified color-magnitude diagrams(CMDs)to derive the age of the clusters.The known cluster NGC 7062 in an 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.
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| 关 键 词： | GALAXY open clusters and associations-stars kinematics and dynamics-methods data analysis |
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