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Table 3.
Schema for the Members table.
| Column name | Units | Description | Data type |
|---|---|---|---|
| Cluster | – | Cluster name as used in Cantat-Gaudin et al. (2020). | str |
| source_id | – | Gaia source identifier from Gaia DR3. | long int |
| ra_icrs | deg | RA in decimal degrees in ICRS, as given in Gaia DR3. | float |
| dec_icrs | deg | Declination in decimal degrees in ICRS, as given in Gaia DR3. | float |
| pmra | mas yr−1 | Proper motion in RA multiplied by cos(δ), as given in Gaia DR3. | float |
| pmdec | mas yr−1 | Proper motion in declination, as given in Gaia DR3. | float |
| parallax | mas | Parallax as given in Gaia DR3. | float |
| radial_velocity | km s−1 | Radial velocity as given in Gaia DR3. | float |
| x | kpc | X coordinate in the Galactocentric coordinate system. Sun is at ( − 8.122, 0.0, 0.0208) kpc. | float |
| y | kpc | Y coordinate in the Galactocentric coordinate system. Sun is at ( − 8.122, 0.0, 0.0208) kpc. | float |
| z | kpc | Z coordinate in the Galactocentric coordinate system. Sun is at ( − 8.122, 0.0, 0.0208) kpc. | float |
| d_axis | kpc | Position along the major axis of the cluster. The simulated cluster is used to calculate the orientation of the axis. | float |
| l | deg | Galactic longitude. | float |
| b | deg | Galactic latitude. | float |
| d_2d | deg | Distance from the cluster centre projected onto the sky. | float |
| proj_2d | mas yr−1 | On-sky motion projected to the radial direction from the cluster (positive velocity means expansion). | float |
| proj_perp_2d | mas yr−1 | On-sky motion projected perpendicularly to the direction to the cluster centre. | float |
| d_3d | kpc | Distance from the cluster centre. Parallax was directly inverted to obtain the distance from the Sun. | float |
| proj_3d | km s−1 | Motion projected to the radial direction from the cluster (positive velocity means expansion). | float |
| proj_perp_3d | km s−1 | Motion projected perpendicularly to the direction to the cluster centre. Can have any orientation. | float |
| likelihood | – | Probability that the simulation puts a star at this position in the 5D parameter space. Is not normalised. The 5D parameter space refers to (x, y, z, μ∥, μ⊥) | float |
| likelihood_6d | – | Probability that the simulation puts a star at this position in the 6D parameter space (if radial_velocity exists). Is not normalised. The 6D space includes the radial velocity (x, y, z, μ∥, μ⊥, vr) | float |
| probability_int | – | Probability that the star is a cluster member calculated from the statistics for all stars within the same likelihood bin. Is normalised to [0,1]. | float |
| probability_bin | – | Probability that the star is a cluster member calculated from the statistics for a small region in 5D parameter space. Is normalised to [0,1]. | float |
| phot_g_mean_mag | – | G magnitude as given in Gaia DR3. | float |
| phot_bp_mean_mag | – | BP magnitude as given in Gaia DR3. | float |
| phot_rp_mean_mag | – | RP magnitude as given in Gaia DR3. | float |
| ag_gspphot | mag | Extinction in G band as given in Gaia DR3. | float |
| ebpminrp_gspphot | mag | Colour excess E(BP − RP) as given in Gaia DR3. | float |
| ruwe | – | RUWE value as given in Gaia DR3. | float |
| mass | M⊙ | Mass of the star calculated from the isochrone for age given by Cantat-Gaudin et al. (2020) and Solar metallicity. Potential binaries are treated as single stars. | float |
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