Resumen
We used VVV multi-epoch KS band observations, over a ∼ 5 years baseline to obtain milli and sub-milli arcsec precision astrometry for a sample of 18 previously known high proper motion sources, including precise parallaxes for the first time. Five of these systems are most likely very low mass stars (VLMS) belonging to the galactic halo based on their tangential velocities. This proves the capability of the VVV project to measure high precision trigonometric parallaxes for VLMS up to distances of ∼ 400 pc reaching farther than most other ground based surveys or space missions for these types of stars.
