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 (2) Solar System/Planetary Sci (2) Star Formation & Evolu (2) Astrobio (1) Astronomy Educa (1) Exopla (1) Interstellar Me (1) (-) Galaxy Formation & Evolu (1) State MD (2) NV (1) OH (1) TX (1) (-) NY (1) Facet State City Facet City Membership Class (-) Full Member (1) Facet Membership Class Division HEAD (2) DPS (1) (-) LAD (1) Facet Division Showing 1-1 of 1 results Dmitry Ivanov Full Member Affiliation Columbia University State/Province NY Country United States