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 Exopla (1) Heliophy (1) Solar System/Planetary Sci (1) Star Formation & Evolu (1) (-) Galaxy Formation & Evolu (1) (-) Interstellar Me (1) State CA (4) HI (1) IA (1) MA (4) MD (5) MI (1) NC (1) NV (1) OR (1) PA (2) TX (1) WI (1) (-) NY (1) Facet State City Facet City Membership Class Alumni Affiliate (1) (-) Full Member (1) Facet Membership Class Division HEAD (3) DPS (2) (-) LAD (1) Facet Division Showing 1-1 of 1 results Dmitry Ivanov Full Member Affiliation Columbia University State/Province NY Country United States