We present the ultraviolet–optical–infrared spectral energy distribution of the low inclination novalike cataclysmic variable V592 Cassiopeiae , including new mid-infrared observations from 3.5–24 \mu m obtained with the Spitzer Space Telescope .
At wavelengths shortward of 8 \mu m , the spectral energy distribution of V592 Cas is dominated by the steady state accretion disk , but there is flux density in excess of the summed stellar components and accretion disk at longer wavelengths .
Reproducing the observed spectral energy distribution from ultraviolet to mid-infrared wavelengths can be accomplished by including a circumbinary disk composed of cool dust , with a maximum inner edge temperature of \approx 500 K. The total mass of circumbinary dust in V592 Cas ( \sim 10 ^ { 21 } g ) is similar to that found from recent studies of infrared excess in magnetic CVs , and is too small to have a significant effect on the long-term secular evolution of the cataclysmic variable .
The existence of circumbinary dust in V592 Cas is possibly linked to the presence of a wind outflow in this system , which can provide the necessary raw materials to replenish the circumbinary disk on relatively short timescales , and/or could be a remnant from the common envelope phase early in the formation history of the system .