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How to build an astrometric catalog

Andressa C. S. Ferreira

I will present my masters work that is an astrometric review of the Pre-main sequence stars proper motion catalog, published in 2005 and its extension including other pre-main sequence (PMS) stars. We measured the proper motion of PMS stars and candidates associated to the main star forming regions, or next to them, over the whole sky. The kinematics of these stars is important in the discussion of the star formation mechanisms, membership properties, calculation of distances, ages and stellar masses. In this work we improve the quality of the proper motions previously measured using observations with the CCD meridian circles of Bordeaux/France and Valinhos/Brazil and positions from catalogs found in the literature. We obtained position and proper motion for 1617 objects as faint as V~21 with average accuracies of 30 mas and 4 mas/year.

2016 May 04, 13:30

Centro de Astrofísica da Universidade do Porto (Classroom)
Rua das Estrelas, 4150-762 Porto

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia