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 (-) Heliophy (1) State NY (1) Facet State City Athens (1) Auburn (1) Austin (1) Baltimore (1) Cambridge (1) Greenbelt (1) Iowa City (1) Pasadena (1) Reno (1) University Park (1) (-) New York (1) Facet City Membership Class (-) Full Member (1) Facet Membership Class Division SPD (1) (-) LAD (1) Facet Division Showing 1-1 of 1 results Michael Hahn Full Member Affiliation Columbia University State/Province NY Country United States