ECLIPSES IN CATACLYSMIC VARIABLES WITH STATIONARY ACCRETION DISKS - VI - IS ACCRETION IN UX UMA AND RW TRI REALLY STATIONARY

Disk eclipse light curves of UX UMa and RW Tri are reanalyzed in order to determine two parameters: d log M over dot/d log R, which is a mea sure of systematic deviations from stationary accretion, and Delta log T(edge), which is a correction to the temperature of the disk's edge. For both systems the resulting values of d log M over dot/d log R are slightly negative, most likely due to irradiation of the innermost par t of the disk by the boundary layer Taking this into account we conclu de that accretion in UX UMa and RW Tri is indeed stationary. For both systems there is no evidence for Delta log T-edge being significantly different from zero. Our results contradict those obtained earlier wit h the MEM technique by Horne and Stiening (1985) and Rutten et al. (19 92), which showed the accretion rate to be a strongly increasing funct ion of the radial distance. This means that even at moderate inclinati ons (i = 73.0 and 70.5 degrees) the MEM technique produces spurious re sults.