The large quasar astrometric catalogue (LQAC) and the densification of the ICRF through the LQRF (Large Quasar Reference Frame)
Abstract
As quasars are generally considered as ideal objects for astrometry, for they are supposed to materialize quasi-inertial directions in space, it looks interesting to compile all the existing quasars catalogues in a single one, emphasizing the astrometric quality of the objects according to the catalogue they are coming from. This is the purpose of the LQAC (Large Quasar Astrometric Catalogue) achieved by Souchay et al. (2009). In this paper we explain in some details the basic principles of the construction of the LQAC, as well as the prospects of a new version of this catalogue, and the link with the establishment of the Large Quasar Reference Frame (Andrei et al. 2009).
Neto D.N., Teixeira R.- Publication:
-
Journées Systèmes de Référence Spatio-temporels 2010
- Pub Date:
- October 2011
- Bibcode:
- 2011jsrs.conf..101S