Searching for low mass objects around nearby dMe radio stars
  Nearby M-dwarfs are best suited for searches of low mass companions. VLBI phase-referencing observations with sensitive telescopes are able to detect radio star flux-densities of tenths of mJy as well as to position the star on the sky with submilliarcsecond precision. We have initiated a long-term observational program, using EVN telescopes in combination with NASA DSN dishes, to revisit the kinematics of nearby, single M dwarfs. The precision of the astrometry allows us to search for possible companions with masses down to 1 Jupiter mass. In this contribution we report preliminary results of the first observation epochs, in which we could detect some of the radio stars included in our program. 
J.C. Guirado (1), E. Ros (2), D.L. Jones (3), W. Alef (2), J.M.   Marcaide (1), R.A. Preston (3) ((1) U. Valencia, (2) MPIfR...