Table A.1.
Description of the columns in the tables of detected clusters.
| Col. | Label | Unit | Description |
|---|---|---|---|
| 1 | Name | – | Designation |
| 2 | Internal ID | – | Internal designation |
| 3 | All names | – | All literature names |
| 4 | Kind | – | Estimated object typec |
| 5 | nstars | – | Num. of member stars |
| 6 | S/N | – | Astrometric S/N |
| 7 | nstars|rt | – | nstars within rt |
| 8 | S/N|rt | – | S/N within rt |
| 9-10 | α, δ | deg | ICRS position |
| 11-12 | l, b | deg | Galactic position |
| 13-16 | r50, c, t, tot | deg | Angular radii |
| 17-20 | R50, c, t, tot | pc | Physical radii |
| 21-26a | μα*, μδ | mas yr−1 | ICRS proper motions |
| 27-29a | ϖ | mas | Parallax |
| 30-32b | d | pc | Distance |
| 33 | nd | pc | nstars for distance calc. |
| 34 | ϖ0 type | – | Parallax offset typed |
| 35-37 | X, Y, Z | pc | Galactocentric coords. |
| 38-40a | RV | km s−1 | Radial velocitye |
| 41 | nRV | – | nstars with RVs |
| 42-46b | CMD class | – | CMD class quantilesf |
| 47 | Human class | – | (where available)f |
| 48-50b | log t | log[yr] | Cluster age |
| 51-53b | AV | mag | V-band extinction |
| 54-56b | ΔAV | mag | Differential AV |
| 57-59b | m − M | mag | Photometric dist. mod. |
| 60 | mclSize | – | HDBSCAN parameter |
| 61 | merged | – | Flag if mergedg |
| 62 | is_gmm | – | Flag if GMM usedh |
| 63 | ncrossmatches | – | Num. crossmatches |
| 64 | Xmatch type | – | Type of crossmatchi |
Notes. The full version is available at the CDS.
g for objects in the Vasiliev & Baumgardt (2021) GC catalogue, otherwise o (OC) or m (moving group) for clusters according to the empirical cuts in Cantat-Gaudin & Anders (2020).
Flag indicating six clusters for which parallax bias correction using the method of Lindegren et al. (2021b) was not possible, and a global offset was used instead (see Sect. 3.3).
Cluster CMD classes (the probability of a given cluster being a single coeval population of stars) derived using the neural network in Sect. 4. Some clusters also appeared in our human-labelled test dataset, for which human classes are also listed.
Indicates 25 clusters merged by hand where initial HDBSCAN clustering was unsatisfactory (see Sect. 3).
Indicates nine clusters with members from an additional Gaussian mixture model clustering step, typically applied to difficult to separate binary clusters.
Method used to assign name to cluster. In particular, ‘many to many’ crossmatches are the most difficult to assign due to multiple objects crossmatching to multiple literature entries co-dependently (see Sect. 6.3 for full discussion of final cluster name assignments.)
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