A self-consistent orbital architecture for GG Tau A. I. Simultaneous orbital fitting of the hierarchical triple

A. Lacquement, H. Beust, G. Duchêne +4

GG Tau $A$ is a young triple system with the close pair, $A{b}_1$--$A{b}_2$, and $Aa$, surrounded by a massive circumtriple disk with a large inner cavity difficult to explain in a bin…