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 (3) Exopla (2) Solar System/Planetary Sci (2) Astronomy Educa (1) Clusters of Galaxies/Large-scale Struc (1) Cosmo (1) Galactic Structure & Stellar Populat (1) Galaxy Formation & Evolu (1) GRBs (1) High-Energy Pheno (1) Interstellar Me (1) Star Formation & Evolu (1) Supernovae (1) (-) Astrobio (1) State AB (1) CA (3) CO (1) GA (1) MA (1) MD (2) NM (2) NV (1) NY (1) TN (1) WA (1) (-) AZ (1) Facet State City Flagstaff (1) Facet City Membership Class Full Member (1) Facet Membership Class Division DPS (8) HAD (1) HEAD (1) (-) SPD (1) Facet Division Showing 1-1 of 1 results Christoph Keller Full Member Affiliation Lowell Observatory State/Province AZ Country United States