The Unified Cluster Catalogue

The Unified Cluster Catalogue (UCC) These are the latest version of the UCC database, stored in the UCC_cat.csv.gz file, and the associated members estimated for each of the listed clusters, stored in the UCC_members.parquet.gz file. The columns listed in UCC_cat are: ID : Name(s) associated to the OC RA_ICRS : Median RA from the databases this OC is present DE_ICRS : Median DEC from the databases this OC is present plx : Median parallax from the databases this OC is present pmRA : Median RA proper motion from the databases this OC is present pmDE : Median DEC proper motion from the databases this OC is present UCC_ID : Internal UCC naming N_50 : Number of estimated members with P>0.5 r_50 : Radius that contains half the members (in arcmin) RA_ICRS_m : Median RA estimated using the selected members DE_ICRS_m : Median DEC estimated using the selected members plx_m : Median parallax estimated using the selected members pmRA_m : Median RA proper motion estimated using the selected members pmDE_m : Median DEC proper motion estimated using the selected members Rv_m : Median radial velocity estimated using the selected members N_Rv : Number of members with Rv data C1 : C_phot quality class C2 : C_dens quality class C3 : C_phot,C_dens, combined quality class统一星团目录（Unified Cluster Catalogue，UCC） 本数据集为UCC的最新版本，存储于UCC_cat.csv.gz文件中；同时包含针对每个已列示星团的估算成员星数据，存储于UCC_members.parquet.gz文件内。 UCC_cat所包含的列项如下： ID：关联至该开放星团（Open Cluster，OC）的名称 RA_ICRS：该开放星团所关联数据库中提取的中位赤经 DE_ICRS：该开放星团所关联数据库中提取的中位赤纬 plx：该开放星团所关联数据库中提取的中位视差 pmRA：该开放星团所关联数据库中提取的中位赤经自行 pmDE：该开放星团所关联数据库中提取的中位赤纬自行 UCC_ID：UCC内部命名标识 N_50：概率P>0.5的估算成员星数量 r_50：包含半数成员星的半径（单位：角分） RA_ICRS_m：通过选定成员星估算得到的中位赤经 DE_ICRS_m：通过选定成员星估算得到的中位赤纬 plx_m：通过选定成员星估算得到的中位视差 pmRA_m：通过选定成员星估算得到的中位赤经自行 pmDE_m：通过选定成员星估算得到的中位赤纬自行 Rv_m：通过选定成员星估算得到的中位视向速度 N_Rv：拥有视向速度数据的成员星数量 C1：C_phot质量等级 C2：C_dens质量等级 C3：C_phot与C_dens的组合质量等级