Member Directory The AAS maintains a membership directory to facilitate member interaction and to support the conduct of official Society business. Search directory for: Filter Results By Clear Filters Type of Science Active Galactic Nu (1) Clusters of Galaxies/Large-scale Struc (1) Galactic Structure & Stellar Populat (1) Galaxy Formation & Evolu (1) Interstellar Me (1) Star Formation & Evolu (1) State Facet State City Cambridge (1) Lexington (1) Lowell (2) Facet City Membership Class F (1) Facet Membership Class Division Facet Division