  Kinematics combined with detailed element abundances provide the method of
analysis of stellar populations using as much available information as
possible, in contrast to other methods. Here we employ this technique on local
HBA stars in an ongoing programme to search for omega Centauri debris among
these objects, which led us to discover another group of stars with very
similar kinematics and abundances, the Cometary Orbit Group (COG). We also
comment on the future of this kind of undertaking in the Gaia era.
