Gaia Data Release 3
Open Access

Table 4.

Notation and nomenclature.

Variables
ϖ, μ Astrometry
σϖ, σμα, σμδ, Their uncertainties
vlos Line-of-sight (los) velocities
d, σd Distance and related uncertainty
x, y, z Heliocentric Cartesian coordinates
X, Y, Z Galactocentric Cartesian coordinates
u, v, w x, y, z velocity components
R, ϕ, z LH galactocentric cylindrical coordinates
vR, vϕ, vz R, ϕ, z velocity components
σvR, σvϕ, σvz Their uncertainties
VR, Vϕ, Vz Mean vR, vϕ, vz velocities
σVR, σVϕ, σVz Their uncertainties
VR Radial velocity
Vϕ Azimuthal velocity
Mean azimuthal velocity at R
Velocity dispersions in R, ϕ, z directions

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