Solid, dashed, and dotted lines represent examples of a binary system undergoing RLO and MT for different sets of initial values at the onset of RLO. The vertical dashed line is the observed orbital period given in Table 1. The color map indicates the relative likelihood log (ℒ_i/ ℒ_max) from Eq. (14). The thickening of the color bands around the observed orbital period denotes that in this region all model parameters ℐ_i,j, different from the one being plotted, are within 2σ of the observed value from Table 1. In all panels but f) and h), the dark and light gray regions are centered on the observed value, and each gray contrast extends to an area of ±1σ and ±2σ, respectively. The black lines in panel d) are the critical MT rate, Eq. (13). The light gray lines in panel h) are the Eddington accretion rate (Frank et al. 2002). We note that all three examples displays first a case A MT where core-hydrogen burning takes place. The sudden changes seen at periods equal to 3.1, 3.4, and 3.7 days are the transition from case A MT to case B MT, where the donor star has formed a helium core and hydrogen-shell burning has commenced. Computation of the three examples shown are stopped before case B MT is completed, when the orbital period reaches six days.