We present a spectral analysis of the Hubble Space Telescope Cosmic Origins Spectrograph spectrum of the southern VY Scl nova-like variable BB Doradus, obtained as part of a Cycle 20 { \it HST/COS} survey of accreting white dwarfs in cataclysmic variables. BB Dor was observed with { \it COS} during an intermediate state with a low mass accretion rate, thereby allowing an estimate of the white dwarf temperature. The results of our spectral analysis show that the white dwarf is a significant far ultraviolet component with a temperature of $\sim$35,000-$\sim$50,000$~$K, assuming a $0.80~M_{ \odot}$ WD mass ($\log(g)=8.4$). The disk with a mass accretion rate of $\approx 10^{ -10}~M_{ \odot}~$yr$^{ -1}$ contributes about 1/5 to 1/2 of the far ultraviolet flux.
Categories: astro-ph.SR