Locations and nomenclature of Close et al. (2003b) of the θ ¹ Ori Trapezium stars as imaged over ~35 × 30'' FOV at the LBT with LBT AO/PISCES in [Fe ii] (reproduced from Close et al. 2012b). Logarithmic color scale. North is up and east is to the left. Note that the object " A ₁" is really a spectroscopic binary ( A ₁ A ₃) where the unseen companion A ₃ is separated from A ₁ by 1 AU (Bossi et al. 1989). The B group is shown in more detail in Figures 6– 9. It is not currently clear if D ₂ is physically related to D ₁. E ₁ appears to be a single star. No new faint companions were discovered (at >5σ) around any of the Trapezium stars in this study.