The Large Quasar Reference Frame ( LQRF )-an optical representation of the ICRS

@inproceedings{Andrei1996TheLQ,
  title={The Large Quasar Reference Frame ( LQRF )-an optical representation of the ICRS},
  author={Alexandru Andrei and Jean Souchay and Norbert Zacharias and Richard L. Smart and R. Vieira Martins and Domingos Neto and Julio I. B. Camargo and M. Assafin and C. Barache and Sebastien Bouquillon and James Penna and Francois Taris},
  year={1996}
}
Context. The large number and all-sky distribution of quasars from di fferent surveys, along with their presence in large, deep astr ometric catalogs, enables the building of an optical materia lization of the ICRS following its defining principles. Name ly, kinematically non-rotating with respect to the ensemble of distant extrag alactic objects; aligned with the mean equator and dynamica l equinox of J2000; and realized by a list of adopted coordinates of extra galatic sources. Aims. The LQRF… CONTINUE READING