IA/U.Porto Cookie Seminar - How to build an astrometric catalog - 4 maio 2016



How to build an astrometric catalog

Andressa 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.


4 de maio de 2016 | 13:30
Centro de Astrofísica da Universidade do Porto (Classroom)
Rua das Estrelas, 4150-762 Porto


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