Planets around Low-mass Stars ( Palms ) . V . Age-dating Low-mass Companions to Members and Interlopers of Young Moving Groups

We present optical and near-infrared adaptive optics (AO) imaging and spectroscopy of 13 ultracool (>M6) companions to late-type stars (K7–M4.5), most of which have recently been identified as candidate members of nearby young moving groups (YMGs; 8–120Myr) in the literature. Three of these are new companions identified in our AO imaging survey, and two… (More)