1. Universität Stuttgart, Deutsches SOFIA Institut, Stuttgart
2. University of Illinois, Department of Astronomy, Urbana, Illinois
3. Universität Bonn, Argelander-Institut für Astronomie, Bonn
4. George Mason University, Department of Physics and Astronomy, Fairfax, Virginia
5. California Institute of Technology, Pasadena, California
6. Universidad de Concepción, Barrio Universitario, Departamento de Astronomía, Concepción
7. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California