Schematic illustration of a possible 2+1 dynamical encounter leading to the formation of the close Aa–Ab binary in S1082. Left: Initial configuration, consisting of an approaching binary with initial separation A1 (1.3 and 0.4 M_⊙) and an isolated 1.0 M_⊙ star. This scenario assumes that prior MT within the incoming binary produced the BS before the encounter. Center: During the interaction, an exchange encounter occurs in which the 1.0 M_⊙ star replaces the lower-mass component of the incoming binary. Right: Final outcome, producing the close Aa–Ab pair (1.3 and 1.0 M_⊙) and ejecting the 0.4 M_⊙ star. Orbits are not to scale; the schematic is intended only to illustrate the exchange process discussed in Section 4.2.2.