VARIATIONS IN BRIGHTNESS AND POLARIZATION OF UX DRACONIS

Photoelectric observations of the brightness and polarization of the carbon star UX Dra in 1989-1993 are presented and discussed. The strong variations in this starʹs period and the impossibility of determining it from our observations forced us lo use an extrapolation ofVetesnikʹs period-variation ciir\ʹe. As in Vetesnikʹs observations, our determinations of UX Draʹs brightness are satisfied far better by a period twice as long. The variations in UX Draʹs brightness and polarization parameters resemble most closely those of an RV Tau star, in our opinion.