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 Solar System/Planetary Sci (4) Exopla (3) Galactic Structure & Stellar Populat (3) Star Formation & Evolu (3) Astronomy Educa (2) Heliophy (2) Galaxy Formation & Evolu (1) (-) Astrobio (1) State WA (1) (-) AZ (1) Facet State City Cambridge (1) Tempe (2) Tucson (16) (-) Flagstaff (1) Facet City Membership Class Div Affil - DPS (1) (-) Full Member (1) Facet Membership Class Division SPD (1) Facet Division Showing 1-1 of 1 results Christoph Keller Full Member Affiliation Lowell Observatory State/Province AZ Country United States