A SPECTROPHOTOMETRIC STUDY OF THE CATACLYSMIC VARIABLE 1329-294

We present observations of the cataclysmic variable 1329 - 294. Spectr ophotometry covering the region 3400-9600 angstrom reveals broad, doub le-peaked Balmer and He I emission, but no lines of high excitation. T he continuum rises strongly into the red, but the red spectrum shows n o secondary star features or ellipsoidal variations. The continuum and emission-line light curves display no eclipse structure and are domin ated by flickering. An orbital period of 0.0748 +/- 0.0005 d (107.7 mi n) is found from sinusoidal fits to the radial velocities of the emiss ion lines. Folding of the data on this period yields a K-velocity of 1 32.6 +/- 4.2 km s-1 and a gamma-velocity of 38.8 +/- 3.0 km s-1. Trail ed spectra show a prominent S-wave within the emission lines, consiste nt with a bright-spot origin. Doppler tomography provides a successful test for the adopted orbital period and verifies the existence of the bright-spot. These maps indicate that there is little Balmer or He I emission from the secondary. The similarity between this system and ma ny of the SU UMa-type dwarf novae encourages us to believe that we sho uld place it in this category.