Abstract

From radio to X-ray wavelengths, AB Doradus has been an intensively studied star. We have identified ~30 nearby star systems, each with one or more characteristics of youth, that are moving through space together with AB Dor. This diverse set of ~50 million year old star systems is the comoving, youthful group closest to Earth. The group's nucleus is a clustering of a dozen stars ~20 pc from Earth that includes AB Dor itself. The AB Dor moving group joins the previously known and somewhat younger and more distant Tucana/Horologium and TW Hydrae associations and the β Pictoris moving group as excellent laboratories for investigations of forming planetary systems.