ddale@uwyo.edu

¹ Department of Physics and Astronomy, University of Wyoming, Laramie, WY
² Departamento de Astrofisica, Universidad Complutense, Madrid, Spain
³ Steward Observatory, University of Arizona, Tucson, AZ
⁴ Spitzer Science Center, California Institute of Technology, Pasadena, CA
⁵ Astrophysics Group, Imperial College, Blackett Laboratory, London, UK
⁶ Center for Astrophysical Sciences, Johns Hopkins University, Baltimore, MD
⁷ Carnegie Observatories, Carnegie Institution of Washington, Pasadena, CA
⁸ Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, Marseille, France
⁹ California Institute of Technology, Pasadena, CA
¹⁰ Space Telescope Science Institute, Baltimore, MD
¹¹ Astronomy Department, Wesleyan University, Middletown, CT
¹² NASA/Ames Research Center, Moffett Field, CA
¹³ Institute of Astronomy, University of Cambridge, Cambridge, UK
¹⁴ Department of Physics and Astronomy, University of Missouri, Columbia, MO
¹⁵ Astronomy Option, California Institute of Technology, Pasadena, CA
¹⁶ Department of Astronomy, Yale University, New Haven, CT
¹⁷ Max-Planck-Institut für Astronomie, Heidelberg, Germany