Gaia Source (gaiadr3.gaia_source_lite)
The table has 1811709824 rows, 52 columns.
Description
This table has an entry for every Gaia observed source as published with this data release. It contains the basic source parameters, in their final state as processed by the Gaia Data Processing and Analysis Consortium from the raw data coming from the spacecraft. The table is complemented with others containing information specific to certain kinds of objects (e.g.~Solar--system objects, non--single stars, variables etc.) and value--added processing (e.g.~astrophysical parameters etc.). Further array data types (spectra, epoch measurements) are presented separately via "Datalink" resources.
Attribution
If you have used Gaia data in your research, please use the following acknowledgement:
This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
More information can be found on the credit and citation instructions page.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| source_id | long |
meta.id meta.main meta.ref |
Unique source identifier (unique within a particular Data Release) |
|
| random_index | long | meta.code |
Random index for use when selecting subsets |
|
| ra | double |
pos.eq.ra meta.main |
deg |
Right ascension |
| dec | double |
pos.eq.dec meta.main |
deg |
Declination |
| parallax | double | pos.parallax.trig | mas |
Parallax |
| parallax_error | float |
stat.error pos.parallax.trig |
mas |
Standard error of parallax |
| parallax_over_error | float |
stat.snr pos.parallax.trig |
Parallax divided by its standard error |
|
| pmra | double |
pos.pm pos.eq.ra |
mas.yr**-1 |
Proper motion in right ascension direction |
| pmra_error | float |
stat.error pos.pm pos.eq.ra |
mas.yr**-1 |
Standard error of proper motion in right ascension direction |
| pmdec | double |
pos.pm pos.eq.dec |
mas.yr**-1 |
Proper motion in declination direction |
| pmdec_error | float |
stat.error pos.pm pos.eq.dec |
mas.yr**-1 |
Standard error of proper motion in declination direction |
| astrometric_params_solved | short | meta.number |
Which parameters have been solved for? |
|
| pseudocolour | float | em.wavenumber | um**-1 |
Astrometrically estimated pseudocolour of the source |
| pseudocolour_error | float |
stat.error em.wavenumber |
um**-1 |
Standard error of the pseudocolour of the source |
| ipd_frac_multi_peak | short | stat.value |
Percent of successful-IPD windows with more than one peak |
|
| ipd_frac_odd_win | short | stat.value |
Percent of transits with truncated windows or multiple gate |
|
| ruwe | float | stat.error |
Renormalised unit weight error |
|
| phot_g_mean_flux_over_error | float |
stat.snr phot.flux em.opt |
G-band mean flux divided by its error |
|
| phot_g_mean_mag | float |
phot.mag em.opt |
mag |
G-band mean magnitude |
| phot_bp_mean_flux_over_error | float |
stat.snr phot.flux em.opt.B |
Integrated BP mean flux divided by its error |
|
| phot_bp_mean_mag | float |
phot.mag em.opt.B |
mag |
Integrated BP mean magnitude |
| phot_rp_mean_flux_over_error | float |
stat.snr phot.flux em.opt.R |
Integrated RP mean flux divided by its error |
|
| phot_rp_mean_mag | float |
phot.mag em.opt.R |
mag |
Integrated RP mean magnitude |
| phot_bp_rp_excess_factor | float |
arith.factor phot.flux em.opt |
BP/RP excess factor |
|
| bp_rp | float |
phot.color em.opt.B em.opt.R |
mag |
BP - RP colour |
| radial_velocity | float |
spect.dopplerVeloc.opt em.opt.I |
km.s**-1 |
Radial velocity |
| radial_velocity_error | float |
stat.error spect.dopplerVeloc.opt em.opt.I |
km.s**-1 |
Radial velocity error |
| rv_nb_transits | short | meta.number |
Number of transits used to compute the radial velocity |
|
| rv_expected_sig_to_noise | float | stat.snr |
Expected signal to noise ratio in the combination of the spectra used to obtain the radial velocity |
|
| rv_renormalised_gof | float | stat.fit.goodness |
Radial velocity renormalised goodness of fit |
|
| rv_chisq_pvalue | float | stat.fit.param |
P-value for constancy based on a chi-squared criterion |
|
| phot_variable_flag | char |
meta.code src.var |
Photometric variability flag |
|
| l | double | pos.galactic.lon | deg |
Galactic longitude |
| b | double | pos.galactic.lat | deg |
Galactic latitude |
| in_qso_candidates | boolean | meta.code.status |
Flag indicating the availability of additional information in the QsoCandidates table |
|
| in_galaxy_candidates | boolean | meta.code.status |
Flag indicating the availability of additional information in the GalaxyCandidates table |
|
| non_single_star | short | meta.code.status |
Flag indicating the availability of additional information in the various Non-Single Star tables |
|
| has_xp_continuous | boolean | meta.code.status |
Flag indicating the availability of mean BP/RP spectrum in continuous representation for this source |
|
| has_xp_sampled | boolean | meta.code.status |
Flag indicating the availability of mean BP/RP spectrum in sampled form for this source |
|
| has_rvs | boolean | meta.code.status |
Flag indicating the availability of mean RVS spectrum for this source |
|
| has_epoch_photometry | boolean | meta.code.status |
Flag indicating the availability of epoch photometry for this source |
|
| has_epoch_rv | boolean | meta.code.status |
Flag indicating the availability of epoch radial velocity for this source |
|
| has_mcmc_gspphot | boolean | meta.code.status |
Flag indicating the availability of GSP-Phot MCMC samples for this source |
|
| has_mcmc_msc | boolean | meta.code.status |
Flag indicating the availability of MSC MCMC samples for this source |
|
| in_andromeda_survey | boolean | meta.code.status |
Flag indicating that the source is present in the Gaia Andromeda Photometric Survey (GAPS) |
|
| teff_gspphot | float | phys.temperature.effective | K |
Effective temperature from GSP-Phot Aeneas best library using BP/RP spectra |
| logg_gspphot | float | phys.gravity | log(cm.s**-2) |
Surface gravity from GSP-Phot Aeneas best library using BP/RP spectra |
| mh_gspphot | float | phys.abund.Z | "dex" |
Iron abundance from GSP-Phot Aeneas best library using BP/RP spectra |
| distance_gspphot | float |
pos.distance pos.eq |
pc |
Distance from GSP-Phot Aeneas best library using BP/RP spectra |
| ag_gspphot | float |
phys.absorption em.opt |
mag |
Extinction in G band from GSP-Phot Aeneas best library using BP/RP spectra |
| ebpminrp_gspphot | float | phot.color.excess | mag |
Reddening E(GBP - GRP) from GSP-Phot Aeneas best library using BP/RP spectra |
| pos | char |