ANDREI, A. H.; ANTON, S.; BARACHE, C.; BOUQUILLON, S.; BOURDA, G.; LE CAMPION, J.-F.; CHARLOT, P.; LAMBERT, S.; PEREIRA OSÓRIO, J. J.; SOUCHAY, J.; TARIS, F.; ASSAFIN, M.; CAMARGO, J. I. B.; DA SILVA NETO, D. N.; VIEIRA MARTINS, R.

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ANDREI, A. H.
Observatorio Nacional/MCT
Observatório do Valongo

ANTON, S.
Faculdade de Ciências da Universidade do Porto [FCUP]

BARACHE, C.
Systèmes de Référence Temps Espace [SYRTE]

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Ce document a été publié dans

Memorie della Societa astronomica italiana. 2012, vol. 83, p. 930

Società astronomica italiana

Résumé en anglais

The manifold Gaia scientific output rely on precise astrometry accurate to submas standards. This depends on building a fundamental reference frame formed by pointlike, position stable, and allsky homogeneous grid points. In one word, quasars. The Gaia CU3 Initial Quasar Catalogue Working Package was established to beforehand produce one such list, although ultimately the satellite multiband photometry aided by astrometric monitoring has the potential to pick up a clean sample of quasars.< Réduire

Mots clés en anglais

host galaxy

Gaia

Stars: abundances

AGN: QSO

varibility

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804