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 Astrobio (1) Exopla (1) Heliophy (1) (-) Solar System/Planetary Sci (1) State CA (4) CO (3) FL (1) KS (1) MA (1) MD (4) NJ (1) NM (1) NY (1) TX (2) UT (1) VA (1) WI (1) (-) AZ (1) Facet State City Flagstaff (1) Facet City Membership Class Undergrad Student (1) (-) Full Member (1) Facet Membership Class Division DPS (13) HAD (2) DDA (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