Searching sub-stellar objects in DR1-TGAS, effectiveness and efficiency of Gaias' astrometry

P. A. Cuartas-Restrepo, O. A. Sánchez-Hernández, M. Medina-M

We used 1,477,047 data from DR1-TGAS, in order to analyse the minimum require- ments of accuracy, necessary to detect sub-stellar objects in the astrometric mea- surements of Gaia.…