We are pleased to announce that a new accolade, Fellow of the American Astronomical Society (AAS), has been established to honor members for extraordinary achievement and service. David Helfand, Brian Metzger, and Jerry Ostriker of Columbia are included among the initial group of more than 200 Legacy Fellows designated by the AAS Board of Trustees.

Dr. Kenneth "Rainer" Corely successfully defended his dissertation:

"Detection, data analysis, and astrophysics of gravitational waves.”

Dissertation Sponsor and Research Advisor: Professor Szabi Marka

Dr. Chih-Hsi Lee and Dr. Aaron Sternbach each successfully defended their dissertation.

Chih-Hsi Lee

"Quantum Metrology with a Molecular Lattice Clock and State-Selected Photodissociation of Ultracold Molecules.”

Dissertation Sponsor and Research Advisor: Professor Tanya Zelevinsky

Jiqun Tu

"Dynamics of quantum materials at the nanoscale.”

Dissertation Sponsor and Research Advisor: Professor Dmitri Bassov