THE FORNAX-LEO-SCULPTOR STREAM REVISITED

Lynden-Bell first demonstrated that the satellites of the Milky Way ap pear situated along two great ''streams'' in the sky: the ''Magellanic stream'' and the ''Fornax-Leo-Sculptor (FLS) stream.'' Further explor ation of the three-dimensional distribution of Galaxtic satellites rev eals that the recently discovered Sextans and Phoenix dwarf spheroidal galaxies also lie near the plane defined by the FLS galaxies, and the refore strengthens the evidence in favor of the FLS stream. Moreover, a specific group of globular clusters-those exhibiting the reddest hor izontal branches (HBs) among those identified as ''young halo'' by Zin n-appear to populate the FLS stream. As previously demonstrated by Zin n, the spatial distribution of old halo globulars appears to be flatte ned toward the Galactic plane, and therefore the old halo clusters are typically anti-correlated to the nearly orthogonal FLS stream. A scen ario is postulated wherein the Galactic satellites of the FLS stream a nd the red HB, young halo globular clusters share a common origin in t he accretion of a formerly larger, parent satellite galaxy or Searle & Zinn ''fragment.''