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