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Fig. 3


Radiative efficiency of accretion as a function of the total mass of a binary. Relation (6) is shown by a thick line. The two thinner lines are at one standard deviation above and below the thick line. Errors and realistic estimates of inaccuracies are shown for individual cases. Filled squares indicate the positions of the ten direct impact systems, whereas filled circles are used for the three systems with an accretion disk.

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