OBSERVATIONS OF SUSPECTED SYMBIOTIC STARS

We present optical and near infrared spectroscopy of the stars V417 Ce n, V704 Cen, RT Cru, H1-25, NSV 10435 and NSV 11776. All of these obje cts show a late-type continuum with bright HI, HeI and [OIII] emission lines. The stars H1-25 and NSV 11776 present emission lines of HeII l ambda4686, [FeVII] lambda6086 and the 6830 angstrom band, while RT Cru and NSV 10435 show only the Hell line. Photoelectric U BV RI and shor t CCD time series photometry were also obtained for most of these obje cts. RT Cru presented brightness variations with time scales of 10-30 minutes and amplitude approximately 0.03-0.05 mag in the V band and up to 0.09 mag in the B band; the other stars have not shown short time variations. RT Cru, H1-25, NSV 10435 and NSV 11776 are classified amon g the symbiotic stars.