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 Star Formation & Evolu (3) Active Galactic Nu (2) Interstellar Me (2) Solar System/Planetary Sci (2) Astronomy Educa (1) Cosmo (1) Exopla (1) GRBs (1) Supernovae (1) (-) Galaxy Formation & Evolu (1) (-) Heliophy (1) (-) High-Energy Pheno (1) State AL (1) CA (4) IA (1) MA (5) MD (2) MI (1) NM (3) NV (1) OR (2) PA (1) TN (1) TX (1) WI (1) (-) NY (3) Facet State City New York (1) Facet City Membership Class Full Member (2) Undergrad Student (1) Facet Membership Class Division HEAD (7) SPD (5) DPS (4) DDA (3) HAD (3) (-) LAD (3) Facet Division Showing 1-3 of 3 results Michael Hahn Full Member Affiliation Columbia University State/Province NY Country United States Dmitry Ivanov Full Member Affiliation Columbia University State/Province NY Country United States Victor Liu Undergrad Student Affiliation Yale University State/Province NY Country United States