TEIXEIRA, R.; GALLI, P. A. B.; LE CAMPION, J.-F.; FIDENCIO, M.; BENEVIDES-SOARES, P.; FERREIRA, A. C. S.; DUCOURANT, C.; KRONE-MARTINS, A. G. O.

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TEIXEIRA, R.
Instituto de Astronomia, Geofísica e Ciências Atmosféricas [São Paulo] [IAG]

GALLI, P. A. B.

LE CAMPION, J.-F.
M2A 2014

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Communication dans un congrès

Ce document a été publié dans

Revista Mexicana de Astronomia y Astrofisica, 2014RMxAC..43...55T - Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 43, pp. 55-58 (2014), 2014RMxAC..43...55T - Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 43, pp. 55-58 (2014), 2014RMxAC..43...55T - Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 43, pp. 55-58 (2014), 2014. 2014-06, vol. 43, p. 55-58

Universidad Nacional Autonoma de Mexico

Résumé en anglais

In this work we have started an investigation of the proper motions given by some of the main and huge astrometric catalogs. This investigation consists in the comparison between proper motions from these catalogs and those determined exclusively with CCD meridian circle observations done at the Abrahão de Moraes - Valinhos Observatory (Brazil) over 15 years. The motivation for this work is the comfortable but dangerous utilization of proper motions from some of these very important catalogs that globally can be very good but locally not so good. Our goal is just to alert for the need of a more careful utilization of these proper motions, mainly those of faint stars.< Réduire

Mots clés en anglais

astrometry

catalogs

proper motions

Origine

Importé de hal

Unités de recherche

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