ON THE RADIAL-VELOCITY VARIATIONS IN BE STARS

We present the results of numerical calculations of low frequency one armed density waves in a nearly Keplerian disc about a rotationally de formed Be star. For plausible values for the Be star's rotational flat tening and for the disc's characteristic temperature we find slowly pr ecessing (prograde) one armed modes with periods in the range of the o bserved V/R variations. Furthermore, these modes are naturally confine d to a few stellar radii about the central star, like the observed cyc lic V/R variations, and may well be the cause of these variations.