Astrometry and photometry for brown dwarf candidates in the Hyades

Updated VIJHK photometry is presented for 12 stars from Leggett & Hawkins, along with trigonometric parallaxes and proper motions for three of the sta rs, that are candidate brown dwarfs in the Hyades. The three stars with par allaxes are found to lie well beyond the Hyades cluster and to fall 3-4 mag above the main sequence, indicating that they are pre-main-sequence object s. These results illustrate the problem that contaminating field stars pose for attempts to identify rare objects such as brown dwarfs as physical mem bers of clusters.