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