TY  - GEN 
AU  - Mignard, F.
AU  - Klioner, S. A.
AU  - Lindegren, L.
AU  - Hernández, J.
AU  - Berihuete Macías, Angel
A4  - Estadística e Investigación Operativa
PY  - 2018
SN  - 1432-0746
SN  - 0004-6361
UR  - http://hdl.handle.net/10498/32982
AB  - The second release of Gaia data (Gaia DR2) contains the astrometric parameters for more than half a million quasars. This
set defines a kinematically non-rotating reference frame in the optical domain. A subset of these quasars have accurate VLBI...
LA  - eng
PB  - EDP Sciences
KW  - astrometry
KW  - reference systems
KW  - catalogs
TI  - Gaia Data Release 2: The celestial reference frame (Gaia -CRF2)
DO  - 10.1051/0004-6361/201832916
ER  -