Gaia Universe Model (gaiaedr3.gaia_universe_model)

The table has 8757340160 rows, 44 columns.


Table of simulated galactic stars according to the Gaia Universal Model Simulation (GUMS). True values of the intrinsic simulated quantities (astrometry, photometry and physical parameters) for the sources generated by GOG using the Universe Model are given. No errors are added.


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 (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

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Name Type UCD Unit Description
source_extended_id char meta.number Dimensionless Extended source identifier
source_id long meta.number Dimensionless Long Identifier
solution_id long meta.version Dimensionless Solution Identifier
ra double pos.eq.ra Angle[deg] Right Ascension
dec double pos.eq.dec Angle[deg] Declination
barycentric_distance float pos.distance Length & Distance[pc] Barycentric distance to the simulated source
pmra float
Angular Velocity[mas/year] Proper motion along right ascension
pmdec float
Angular Velocity[mas/year] Proper motion along declination
radial_velocity float spect.dopplerVeloc.opt
Velocity[km/s] Radial Velocity
mag_g float phot.mag
Magnitude[mag] Mean Apparent G magnitude
mag_bp float phot.mag
Magnitude[mag] Mean Apparent BP magnitude
mag_rp float phot.mag
Magnitude[mag] Mean Apparent RP magnitude
mag_rvs float phot.mag
Magnitude[mag] Mean Apparent RVS magnitude
v_i float phot.color
Magnitude[mag] (V-I) color
mean_absolute_v float phot.mag
Magnitude[mag] Mean Absolute V magnitude
ag float phys.absorption
Magnitude[mag] Absorption in G
av float phys.absorption
Magnitude[mag] Absorption in V
teff float phys.temperature.effective Temperature[K] Effective temperature
spectral_type char src.spType Dimensionless spectral class + luminosity class
logg float phys.gravity GravitySurface[log cgs] Surface gravity
feh float phys.abund.Fe Abundances[dex] Metallicity
alphafe float phys.abund Abundances[dex] Alpha elements
mbol float phot.mag.bol Magnitude[mag] Absolute bolometric magnitude
age float time.age Time[Gyear] Age
mass float phys.mass Mass[Solar Mass] Mass
radius float phys.size.radius Length & Distance[Solar Radius] Radius
vsini float phys.veloc.rotat Velocity[km/s] Rotational velocity
population int meta.code.member Dimensionless Population
has_photocenter_motion boolean meta.code.status Dimensionless Boolean describing if the photocenter has or not motion
nc int meta.number Dimensionless Number of components
nt int meta.number Dimensionless Total number of object
semimajor_axis float src.orbital Length & Distance[AU] Semi major axis
eccentricity float src.orbital.eccentricity Dimensionless Eccentricity
inclination float src.orbital.inclination Angle[deg] Inclination
longitude_ascending_node float pos.bodyrc.lon Angle[deg] Longitude of ascending node
orbit_period float src.orbital Time[day] Period of the orbit
periastron_date float src.orbital.periastron Time[day] Date of periastron
periastron_argument float src.orbital.periastron Angle[deg] Periastron argument
variability_type char src.var Dimensionless Variability type
variability_amplitude float src.var
Magnitude[mag] Amplitude of variability
variability_period float src.var
Time[day] Period of variability
variability_phase float src.var
Dimensionless Phase of variability
r_env_r_star float meta Dimensionless Envelope characterisic for Be stars
pos char pos.eq.ra
Angle[rad], Angle[rad] The point position of a source (ra, dec) in radian.