HD-183133 - A NEW BE INTERACTING BINARY

Photometric and spectroscopic observations of HD 183133 indicate that it is a new Be interacting binary system. A Fourier analysis of the li ght curve shows that the period of the system is 48.08 d, with an ampl itude of only 0.028 mag. High-resolution H alpha spectroscopy shows li ne-profile changes on the same time-scale as the photometric variation s. There is some variation in behaviour from cycle to cycle at the O.O 1-mag level in the photometry and in the line-profile variations. Ther e is no indication that the system is eclipsing.