Catalog of atmospheric parameters and chemical abundances from Gaia RVS spectra with convolutional neural network (gaiadr3_contrib.cnn_gaia_rvs_catalog)
The table has 886080 rows, 17 columns.
Description
The table contains atmospheric parameters (Teff, log(g), [M/H]), chemical abundances ([Fe/H], [alpha/M]), and their associated uncertainties for 886080 stars. These labels were derived using a convolutional neural network applied to the full Gaia data product in the form of RVS and XP spectra, parallaxes, and stellar magnitudes. As training labels, we used a set of 45000 stars with high-quality labels from APOGEE DR17. We provide a boundary_flag that should be used to filter the stars outside of the training sample limits. We recommend using flag_boundary = '00000000' for science applications.
The full table can be downloaded via following links in FITS or CSV format:
Attribution
Please cite Guiglion et al. 2023 when using this data.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| source_id | long |
meta.id meta.main meta.ref |
Gaia Source ID |
|
| teff | double | phys.temperature.effective | K |
Effective temperature |
| eteff | double |
stat.value phys.temperature.effective |
K |
Model-to-model despersion of teff |
| sigma_teff | double |
stat.value phys.temperature.effective |
K |
Overall dispersion of teff |
| logg | double | phys.gravity | log(cm.s**-2) |
Surface gravity |
| elogg | double |
stat.value phys.gravity |
log(cm.s**-2) |
Model-to-model dispersion of logg |
| sigma_logg | double |
stat.value phys.gravity |
log(cm.s**-2) |
Overall dispersion of logg |
| mh | double | phys.abund | "dex" |
Overall metallicity |
| emh | double |
stat.value phys.abund |
"dex" |
Model-to-model despersion of [M/H] |
| sigma_mh | double |
stat.phys phys.abund |
"dex" |
Overall dispersion of [M/H] |
| feh | double | phys.abund.Fe | "dex" |
[Fe/H] ratio |
| efeh | double |
stat.value phys.abund.Fe |
"dex" |
Model-to-model dispersion of [Fe/H] |
| sigma_feh | double |
stat.value phys.abund.Fe |
"dex" |
Overall dispersion of [Fe/H] |
| alpham | double | phys.abund | "dex" |
[alpha/M] ratio |
| ealpham | double |
stat.value phys.abund |
"dex" |
Model-to-model dispersion of [alpha/M] |
| sigma_alpham | double |
stat.value phys.abund |
"dex" |
Overall dispersion of [alpha/M] |
| flag_boundary | char |
Boundary flag composed of 8 digits |