Named in honor of Albrecht Unsöld {1905–1995}, author of Physik der Sternatmosphären, long-term professor and director of the Institute for Theoretical Physics at the Christian Albrecht University at Kiel. A student of Sommerfeld’s, he pioneered the use of physics in understanding the structure of stellar atmospheres through the analysis of the strengths and profiles of spectral lines, and he sowed the seeds for the new science of laboratory astrophysics as a source of information about the properties of atoms and for the simulation of physical conditions in astronomical objects. Unsöld is respected as much for his vision for the future of astronomy as for his deep sense of appreciation for its history. (M 12969) _ _.