Elemental abundance studies of CP stars - II. The silicon stars HD 133029 and HD 192913

Fine analyses of the silicon stars HD 133029 and HD 192913 are presented us ing ATLAS9 model atmospheres whose predictions fit the optical region spect rophotometry and H gamma profiles and have the same bulk metallicity as the deduced abundances. Both are very He poor stars. The light elements are mo stly solar except for silicon, and all the heavier elements, except nickel in HD 133029 which is solar, are greatly overabundant. The iron peak elemen ts are typically 10 times overabundant, SrYZr are of order of 100 times sol ar. The rare earths are 1000 or more times overabundant.