Brown dwarfs and the TW Hydrae association

I report the results of a survey for low-mass (0.030 M. greater than or similar to M greater than or similar to 0.013 M.) brown dwarfs in the direction of the TW Hya association using the Two Micron All Sky Survey (2MASS). Two late M dwarfs show signs of low surface gravity and are strong candidates to be young, very low mass (M approximate to 0.025 M.) brown dwarfs related to the TW Hya association. The object 2MASSW J1207334-393254 is particularly notable for its strong Halpha emission. The number of detected brown dwarfs is consistent with the substellar mass function in richer star formation environments. Newly identified late M and L dwarfs in the field are also discussed. Unusual objects include an L dwarf with strong Halpha emission, a possible wide M8-M9 triple system, and a possible L dwarf companion to an LHS star.