13.6.1 Table changes in Gaia EDR3
The following differences with respect to Gaia DR2 should be noted:
Main catalogue tables
The following Gaia DR2 table is not present in Gaia EDR3:
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•
ruwe.
The single parameter contained therein, namely the renormalised unit–weight error, is included in gaia_source No further tables have been added in this part of the data model.
Solar system object tables
The following Gaia DR2 tables are not present in Gaia EDR3:
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•
sso_observation;
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•
sso_source.
Solar system tables will reappear in the full Gaia DR3. No further tables have been added in this part of the data model.
Variability tables
The following Gaia DR2 tables are not present in Gaia EDR3:
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•
vari_cepheid;
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•
vari_classifier_class_definition;
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•
vari_classifier_definition;
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•
vari_classifier_result;
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•
vari_long_period_variable;
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•
vari_rotation_modulation;
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•
vari_rrlyrae;
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•
vari_short_timescale;
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•
vari_time_series_statistics.
An expanded set of variability tables will reappear in the full Gaia DR3. No further tables have been added in this part of the data model.
External catalogues
External catalogue tables added at Gaia EDR3 are:
- •
At Gaia DR2 the data model descriptions for external catalogues served through the Gaia archive included those released and documented with Gaia DR1. For Gaia EDR3 we have not duplicated these descriptions, but users should note that the external catalogue tables themselves remain available in the archive for use in conjunction with the crossmatch tables (see below). Moreover the associated online data model documentation remains available (Hambly et al. 2018a).
Crossmatches
The following Gaia DR2 tables are not present in Gaia EDR3:
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•
sdssdr9_best_neighbour (superseded by SDSS DR13 – see below);
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•
sdssdr9_neighbourhood (superseded by SDSS DR13 – see below);
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•
tmass_best_neighbour (superseded by 2MASS PSC/XSC combined – see below);
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•
tmass_neighbourhood (superseded by 2MASS PSC/XSC combined – see below);
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•
tycho2_best_neighbour (superseded by Tycho2/TDSC combined – see below);
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•
tycho2_neighbourhood (superseded by Tycho2/TDSC combined – see below).
The following tables have been added at Gaia EDR3:
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•
panstarrs1_join;
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•
sdssdr13_best_neighbour;
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•
sdssdr13_neighbourhood;
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•
sdssdr13_join;
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•
skymapperdr2_best_neighbour;
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•
skymapperdr2_neighbourhood;
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•
skymapperdr2_join;
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•
tycho2_tdsc_merge_best_neighbour;
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•
tycho2_tdsc_merge_neighbourhood;
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•
tmass_psc_xsc_best_neighbour;
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•
tmass_psc_xsc_neighbourhood;
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•
tmass_psc_xsc_join;
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•
allwise_best_neighbour;
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•
allwise_neighbourhood;
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•
apassdr9_best_neighbour;
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•
apassdr9_neighbourhood;
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•
gsc23_best_neighbour;
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•
gsc23_neighbourhood;
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•
gsc23_join;
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•
ravedr5_best_neighbour;
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•
ravedr5_neighbourhood;
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•
ravedr5_join.
Further details concerning the contents and use of the join tables in conjunction with the usual neighbour and neighbourhood tables can be found in Chapter 9.
Auxiliary tables
The following Gaia DR2 tables are not present in Gaia EDR3:
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•
aux_allwise_agn_gdr2_cross_id (superseded – see below);
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•
aux_iers_gdr2_cross_id (superseded – see below);
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•
aux_sso_orbit_residuals;
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•
aux_sso_orbits;
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•
dr1_neighbourhood (superseded – see below).
Datalink tables
The following Gaia DR2 tables are not present in Gaia EDR3:
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•
light_curve;
-
•
epoch_photometry.
Datalink resources (enormously expanded over those available at Gaia DR2) will reappear in the full Gaia DR3.