%0 Journal Article %T Subgroups and quotient groups of automorphism groups of RAAGs %A Ruth Charney %A Karen Vogtmann %J Mathematics %D 2009 %I arXiv %X We study subgroups and quotients of outer automorphism groups of right-angled Artin groups (RAAGs). We prove that for all RAAGS, the outer automorphism group is residually finite and, for a large class of RAAGs, it satisfies the Tits alternative. We also investigate which of these automorphism groups contain non-abelian solvable subgroups. %U http://arxiv.org/abs/0909.2444v2