ECLIPSES IN CATACLYSMIC VARIABLES WITH STATIONARY ACCRETION DISKS .4. ON THE PECULIAR T(R) DISTRIBUTIONS

Analysis of eclipse light curves, using the MEM technique, allows to determine the disk's surface brightness distribution. For stationary accretion systems the resulting T(R) distributions deviate significantly from those predicted by the theory for M = const. Using the observational evidence and model calculations it is shown that for systems with inclinations larger than about i = 75 - 80-degrees such peculiar T(R) distributions are largely an artifact resulting from the assumption of a flat disk. This effect, however, cannot be responsible for small deviations shown by the T(R) distributions for objects with i = 70 - 75-degrees. It is suggested that the T(R) distributions may also include an effect of the heating of the disk's outer parts by the stream collision. This could explain deviations observed in systems with lower inclinations.