First astronomical unit scale image of the GW Orionis triple system (J.-P. Berger et al.)

Vol. 529In section 1. Letters

First astronomical unit scale image of the GW Orionis triple system. Direct detection of a new stellar companion

by J.-P. Berger, J. D. Monnier, R. Millan-Gabet, et al., A&A 529, L1
alt

The authors have obtained the first infrared image of a T Tauri multiple system with astronomical unit (AU) resolution. They show that GW Orionis is a triple system, which resolves the inner pair for the first time (separation approx. 1.4 AU) and reveals a new, more distant component (GW Ori C) with a projected separation of approximately 8 AU and direct evidence of orbital motion around the inner pair.